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228349472 = 25133117707
BaseRepresentation
bin11011001110001…
…01011000100000
3120220200100120212
431213011120200
5431424140342
634354153252
75441636621
oct1547053040
9526610525
10228349472
1110799637a
1264582828
1338401c40
1422481a48
15150a9182
hexd9c5620

228349472 has 48 divisors (see below), whose sum is σ = 499790592. Its totient is φ = 101986560.

The previous prime is 228349469. The next prime is 228349483. The reversal of 228349472 is 274943822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043 + ... + 21749.

It is an arithmetic number, because the mean of its divisors is an integer number (10412304).

Almost surely, 2228349472 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 228349472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249895296).

228349472 is an abundant number, since it is smaller than the sum of its proper divisors (271441120).

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

228349472 is a wasteful number, since it uses less digits than its factorization.

228349472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17761 (or 17753 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 228349472 is about 15111.2366138579. The cubic root of 228349472 is about 611.2234444101.

The spelling of 228349472 in words is "two hundred twenty-eight million, three hundred forty-nine thousand, four hundred seventy-two".

Divisors: 1 2 4 8 13 16 26 31 32 52 62 104 124 208 248 403 416 496 806 992 1612 3224 6448 12896 17707 35414 70828 141656 230191 283312 460382 548917 566624 920764 1097834 1841528 2195668 3683056 4391336 7135921 7366112 8782672 14271842 17565344 28543684 57087368 114174736 228349472