28912878570 has 16 divisors (see below), whose sum is σ = 69390908640. Its totient is φ = 7710100944.

The previous prime is 28912878541. The next prime is 28912878613. The reversal of 28912878570 is 7587821982.

It is a self number, because there is not a number n which added to its sum of digits gives 28912878570.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481881280 + ... + 481881339.

It is an arithmetic number, because the mean of its divisors is an integer number (4336931790).

Almost surely, 2^28912878570 is an apocalyptic number.

28912878570 is an abundant number, since it is smaller than the sum of its proper divisors (40478030070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28912878570 is a wasteful number, since it uses less digits than its factorization.

28912878570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963762629.

The product of its (nonzero) digits is 4515840, while the sum is 57.

The spelling of 28912878570 in words is "twenty-eight billion, nine hundred twelve million, eight hundred seventy-eight thousand, five hundred seventy".