28039497276 has 48 divisors (see below), whose sum is σ = 76510886144. Its totient is φ = 7824974976.

The previous prime is 28039497263. The next prime is 28039497313. The reversal of 28039497276 is 67279493082.

It is a super-2 number, since 2×28039497276² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3877825 + ... + 3885048.

Almost surely, 2^28039497276 is an apocalyptic number.

It is an amenable number.

28039497276 is an abundant number, since it is smaller than the sum of its proper divisors (48471388868).

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

28039497276 is a wasteful number, since it uses less digits than its factorization.

28039497276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762930 (or 7762928 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 28039497276 in words is "twenty-eight billion, thirty-nine million, four hundred ninety-seven thousand, two hundred seventy-six".