28576905 has 32 divisors (see below), whose sum is σ = 52690944. Its totient is φ = 12954816.

The previous prime is 28576903. The next prime is 28576927. The reversal of 28576905 is 50967582.

It is not a de Polignac number, because 28576905 - 2¹ = 28576903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28576903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12264 + ... + 14406.

It is an arithmetic number, because the mean of its divisors is an integer number (1646592).

Almost surely, 2^28576905 is an apocalyptic number.

It is an amenable number.

28576905 is a deficient number, since it is larger than the sum of its proper divisors (24114039).

28576905 is a wasteful number, since it uses less digits than its factorization.

28576905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 28576905 is about 5345.7370866888. The cubic root of 28576905 is about 305.7302398518.

The spelling of 28576905 in words is "twenty-eight million, five hundred seventy-six thousand, nine hundred five".