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228416832 = 2632728093
BaseRepresentation
bin11011001110101…
…01110101000000
3120220210202222200
431213111311000
5431433314312
634355433200
75442340200
oct1547256500
9526722880
10228416832
11107a31a46
12645b5800
13384267b7
142249c400
15150be0dc
hexd9d5d40

228416832 has 126 divisors (see below), whose sum is σ = 761702058. Its totient is φ = 65253888.

The previous prime is 228416831. The next prime is 228416833. The reversal of 228416832 is 238614822.

228416832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (228416831) and next prime (228416833).

It can be written as a sum of positive squares in only one way, i.e., 189778176 + 38638656 = 13776^2 + 6216^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228416831) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24178 + ... + 32270.

Almost surely, 2228416832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228416832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380851029).

228416832 is an abundant number, since it is smaller than the sum of its proper divisors (533285226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228416832 is a wasteful number, since it uses less digits than its factorization.

228416832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125 (or 8105 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 228416832 is about 15113.4652545338. The cubic root of 228416832 is about 611.2835393794.

The spelling of 228416832 in words is "two hundred twenty-eight million, four hundred sixteen thousand, eight hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 72 84 96 98 112 126 144 147 168 192 196 224 252 288 294 336 392 441 448 504 576 588 672 784 882 1008 1176 1344 1568 1764 2016 2352 3136 3528 4032 4704 7056 8093 9408 14112 16186 24279 28224 32372 48558 56651 64744 72837 97116 113302 129488 145674 169953 194232 226604 258976 291348 339906 388464 396557 453208 509859 517952 582696 679812 776928 793114 906416 1019718 1165392 1189671 1359624 1553856 1586228 1812832 2039436 2330784 2379342 2719248 3172456 3569013 3625664 4078872 4661568 4758684 5438496 6344912 7138026 8157744 9517368 10876992 12689824 14276052 16315488 19034736 25379648 28552104 32630976 38069472 57104208 76138944 114208416 228416832