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28930752 = 263250227
BaseRepresentation
bin110111001011…
…1001011000000
32000102211112100
41232113023000
524401241002
62512030400
7500623134
oct156271300
960384470
1028930752
1115370114
129832400
135cbc3b6
143bb13c4
15281711c
hex1b972c0

28930752 has 42 divisors (see below), whose sum is σ = 82926428. Its totient is φ = 9643392.

The previous prime is 28930723. The next prime is 28930763. The reversal of 28930752 is 25703982.

It is a happy number.

It is a super-2 number, since 2×289307522 = 1673976822571008, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24538 + ... + 25689.

Almost surely, 228930752 is an apocalyptic number.

It is an amenable number.

28930752 is an abundant number, since it is smaller than the sum of its proper divisors (53995676).

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

28930752 is a wasteful number, since it uses less digits than its factorization.

28930752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50245 (or 50232 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28930752 is about 5378.7314489571. The cubic root of 28930752 is about 306.9869453718.

The spelling of 28930752 in words is "twenty-eight million, nine hundred thirty thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 50227 100454 150681 200908 301362 401816 452043 602724 803632 904086 1205448 1607264 1808172 2410896 3214528 3616344 4821792 7232688 9643584 14465376 28930752