28542885 has 64 divisors (see below), whose sum is σ = 55738368. Its totient is φ = 12190464.

The previous prime is 28542863. The next prime is 28542893. The reversal of 28542885 is 58824582.

28542885 = 886² + 887² + ... + 920².

It is not a de Polignac number, because 28542885 - 2⁵ = 28542853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127884 + ... + 128106.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^28542885 is an apocalyptic number.

It is an amenable number.

28542885 is a deficient number, since it is larger than the sum of its proper divisors (27195483).

28542885 is a wasteful number, since it uses less digits than its factorization.

28542885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its digits is 204800, while the sum is 42.

The square root of 28542885 is about 5342.5541644423. The cubic root of 28542885 is about 305.6088705988.

The spelling of 28542885 in words is "twenty-eight million, five hundred forty-two thousand, eight hundred eighty-five".