28278190264 has 32 divisors (see below), whose sum is σ = 53538505200. Its totient is φ = 14001361920.

The previous prime is 28278190253. The next prime is 28278190267. The reversal of 28278190264 is 46209187282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28278190267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872102 + ... + 2881930.

Almost surely, 2^28278190264 is an apocalyptic number.

It is an amenable number.

28278190264 is a deficient number, since it is larger than the sum of its proper divisors (25260314936).

28278190264 is a wasteful number, since it uses less digits than its factorization.

28278190264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13303 (or 13299 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 28278190264 in words is "twenty-eight billion, two hundred seventy-eight million, one hundred ninety thousand, two hundred sixty-four".