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28900792 = 238940591
BaseRepresentation
bin110111000111…
…1110110111000
32000101022102201
41232033312320
524344311132
62511235544
7500436604
oct156176670
960338381
1028900792
111534a658
129818bb4
135cab87b
143ba4504
15280d2e7
hex1b8fdb8

28900792 has 16 divisors (see below), whose sum is σ = 54799200. Its totient is φ = 14287680.

The previous prime is 28900789. The next prime is 28900793. The reversal of 28900792 is 29700982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19584 + ... + 21007.

It is an arithmetic number, because the mean of its divisors is an integer number (3424950).

Almost surely, 228900792 is an apocalyptic number.

It is an amenable number.

28900792 is a deficient number, since it is larger than the sum of its proper divisors (25898408).

28900792 is a wasteful number, since it uses less digits than its factorization.

28900792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40686 (or 40682 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 28900792 is about 5375.9456842494. The cubic root of 28900792 is about 306.8809393065.

It can be divided in two parts, 28900 and 792, that added together give a palindrome (29692).

The spelling of 28900792 in words is "twenty-eight million, nine hundred thousand, seven hundred ninety-two".

Divisors: 1 2 4 8 89 178 356 712 40591 81182 162364 324728 3612599 7225198 14450396 28900792