28624945087 has 4 divisors (see below), whose sum is σ = 28807269736. Its totient is φ = 28442620440.

The previous prime is 28624945079. The next prime is 28624945127. The reversal of 28624945087 is 78054942682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28624945087 - 2³ = 28624945079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28624948087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91162089 + ... + 91162402.

It is an arithmetic number, because the mean of its divisors is an integer number (7201817434).

Almost surely, 2^28624945087 is an apocalyptic number.

28624945087 is a deficient number, since it is larger than the sum of its proper divisors (182324649).

28624945087 is a wasteful number, since it uses less digits than its factorization.

28624945087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182324648.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 28624945087 in words is "twenty-eight billion, six hundred twenty-four million, nine hundred forty-five thousand, eighty-seven".