28608507 has 12 divisors (see below), whose sum is σ = 41847520. Its totient is φ = 18830448.

The previous prime is 28608493. The next prime is 28608521. The reversal of 28608507 is 70580682.

It is an interprime number because it is at equal distance from previous prime (28608493) and next prime (28608521).

It is not a de Polignac number, because 28608507 - 2⁷ = 28608379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28608407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19408 + ... + 20829.

Almost surely, 2^28608507 is an apocalyptic number.

28608507 is a deficient number, since it is larger than the sum of its proper divisors (13239013).

28608507 is a wasteful number, since it uses less digits than its factorization.

28608507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40322 (or 40319 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 28608507 is about 5348.6920831171. The cubic root of 28608507 is about 305.8428964153.

The spelling of 28608507 in words is "twenty-eight million, six hundred eight thousand, five hundred seven".