28567900 has 36 divisors (see below), whose sum is σ = 64136520. Its totient is φ = 11032000.

The previous prime is 28567879. The next prime is 28567921. The reversal of 28567900 is 976582.

It is an interprime number because it is at equal distance from previous prime (28567879) and next prime (28567921).

It is a super-2 number, since 2×28567900² = 1632249820820000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28567900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (1781570).

Almost surely, 2^28567900 is an apocalyptic number.

28567900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28567900 is an abundant number, since it is smaller than the sum of its proper divisors (35568620).

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

28567900 is a wasteful number, since it uses less digits than its factorization.

28567900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9894 (or 9887 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 28567900 is about 5344.8947604233. The cubic root of 28567900 is about 305.6981231239.

The spelling of 28567900 in words is "twenty-eight million, five hundred sixty-seven thousand, nine hundred".