21736182928 has 20 divisors (see below), whose sum is σ = 42366038400. Its totient is φ = 10803011744.

The previous prime is 21736182901. The next prime is 21736182967. The reversal of 21736182928 is 82928163712.

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, 4064728 + ... + 4070071.

It is an arithmetic number, because the mean of its divisors is an integer number (2118301920).

Almost surely, 2^21736182928 is an apocalyptic number.

It is an amenable number.

21736182928 is a deficient number, since it is larger than the sum of its proper divisors (20629855472).

21736182928 is a wasteful number, since it uses less digits than its factorization.

21736182928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134974 (or 8134968 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The spelling of 21736182928 in words is "twenty-one billion, seven hundred thirty-six million, one hundred eighty-two thousand, nine hundred twenty-eight".