28756365 has 16 divisors (see below), whose sum is σ = 50193216. Its totient is φ = 13942400.

The previous prime is 28756327. The next prime is 28756391. The reversal of 28756365 is 56365782.

It is not a de Polignac number, because 28756365 - 2¹⁷ = 28625293 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86976 + ... + 87305.

It is an arithmetic number, because the mean of its divisors is an integer number (3137076).

Almost surely, 2^28756365 is an apocalyptic number.

It is an amenable number.

28756365 is a deficient number, since it is larger than the sum of its proper divisors (21436851).

28756365 is a wasteful number, since it uses less digits than its factorization.

28756365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174300.

The product of its digits is 302400, while the sum is 42.

The square root of 28756365 is about 5362.4961538448. The cubic root of 28756365 is about 306.3688895610.

The spelling of 28756365 in words is "twenty-eight million, seven hundred fifty-six thousand, three hundred sixty-five".