28690634296 has 16 divisors (see below), whose sum is σ = 56626252200. Its totient is φ = 13590300384.

The previous prime is 28690634257. The next prime is 28690634303. The reversal of 28690634296 is 69243609682.

It is a happy number.

It is a super-2 number, since 2×28690634296² (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 3 ways as a sum of consecutive naturals, for example, 94376935 + ... + 94377238.

Almost surely, 2^28690634296 is an apocalyptic number.

It is an amenable number.

28690634296 is a deficient number, since it is larger than the sum of its proper divisors (27935617904).

28690634296 is a wasteful number, since it uses less digits than its factorization.

28690634296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188754198 (or 188754194 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 28690634296 in words is "twenty-eight billion, six hundred ninety million, six hundred thirty-four thousand, two hundred ninety-six".