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228143608 = 237211157337
BaseRepresentation
bin11011001100100…
…11000111111000
3120220021220012021
431212103013320
5431401043413
634345524224
75440121500
oct1546230770
9526256167
10228143608
11107865740
12644a3674
133835c324
142242aa00
151506818d
hexd9931f8

228143608 has 96 divisors (see below), whose sum is σ = 547925040. Its totient is φ = 88058880.

The previous prime is 228143603. The next prime is 228143611. The reversal of 228143608 is 806341822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228143603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 676816 + ... + 677152.

Almost surely, 2228143608 is an apocalyptic number.

228143608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228143608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273962520).

228143608 is an abundant number, since it is smaller than the sum of its proper divisors (319781432).

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

228143608 is a wasteful number, since it uses less digits than its factorization.

228143608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 228143608 is about 15104.4234580470. The cubic root of 228143608 is about 611.0397103382.

The spelling of 228143608 in words is "two hundred twenty-eight million, one hundred forty-three thousand, six hundred eight".

Divisors: 1 2 4 7 8 11 14 22 28 44 49 56 77 88 98 154 157 196 308 314 337 392 539 616 628 674 1078 1099 1256 1348 1727 2156 2198 2359 2696 3454 3707 4312 4396 4718 6908 7414 7693 8792 9436 12089 13816 14828 15386 16513 18872 24178 25949 29656 30772 33026 48356 51898 52909 61544 66052 84623 96712 103796 105818 132104 169246 181643 207592 211636 338492 363286 370363 423272 581999 676984 726572 740726 1163998 1453144 1481452 2327996 2592541 2962904 4073993 4655992 5185082 8147986 10370164 16295972 20740328 28517951 32591944 57035902 114071804 228143608