28255627290 has 64 divisors (see below), whose sum is σ = 73997442432. Its totient is φ = 6848083200.

The previous prime is 28255627289. The next prime is 28255627303. The reversal of 28255627290 is 9272655282.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1648404 + ... + 1665456.

It is an arithmetic number, because the mean of its divisors is an integer number (1156210038).

Almost surely, 2^28255627290 is an apocalyptic number.

28255627290 is an abundant number, since it is smaller than the sum of its proper divisors (45741815142).

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

28255627290 is a wasteful number, since it uses less digits than its factorization.

28255627290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22095.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 28255627290 in words is "twenty-eight billion, two hundred fifty-five million, six hundred twenty-seven thousand, two hundred ninety".