28076681636 has 48 divisors (see below), whose sum is σ = 52315611264. Its totient is φ = 13138822656.

The previous prime is 28076681629. The next prime is 28076681669. The reversal of 28076681636 is 63618667082.

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, 11215961 + ... + 11218463.

It is an arithmetic number, because the mean of its divisors is an integer number (1089908568).

Almost surely, 2^28076681636 is an apocalyptic number.

It is an amenable number.

28076681636 is a deficient number, since it is larger than the sum of its proper divisors (24238929628).

28076681636 is a wasteful number, since it uses less digits than its factorization.

28076681636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380 (or 3378 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 28076681636 in words is "twenty-eight billion, seventy-six million, six hundred eighty-one thousand, six hundred thirty-six".