28015374676 has 18 divisors (see below), whose sum is σ = 51743080410. Its totient is φ = 13270439952.

The previous prime is 28015374649. The next prime is 28015374691. The reversal of 28015374676 is 67647351082.

It can be written as a sum of positive squares in only one way, i.e., 15252250000 + 12763124676 = 123500^2 + 112974^2 .

It is a super-2 number, since 2×28015374676² (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 5 ways as a sum of consecutive naturals, for example, 9699171 + ... + 9702058.

Almost surely, 2^28015374676 is an apocalyptic number.

It is an amenable number.

28015374676 is a deficient number, since it is larger than the sum of its proper divisors (23727705734).

28015374676 is a wasteful number, since it uses less digits than its factorization.

28015374676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19401271 (or 19401250 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 28015374676 in words is "twenty-eight billion, fifteen million, three hundred seventy-four thousand, six hundred seventy-six".