28641265290 has 48 divisors (see below), whose sum is σ = 81237046176. Its totient is φ = 6943336800.

The previous prime is 28641265283. The next prime is 28641265307. The reversal of 28641265290 is 9256214682.

28641265290 is a `hidden beast` number, since 2 + 86 + 41 + 2 + 6 + 529 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14464296 + ... + 14466275.

It is an arithmetic number, because the mean of its divisors is an integer number (1692438462).

Almost surely, 2^28641265290 is an apocalyptic number.

28641265290 is an abundant number, since it is smaller than the sum of its proper divisors (52595780886).

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

28641265290 is a wasteful number, since it uses less digits than its factorization.

28641265290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28930595 (or 28930592 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 28641265290 in words is "twenty-eight billion, six hundred forty-one million, two hundred sixty-five thousand, two hundred ninety".