130720972 has 6 divisors (see below), whose sum is σ = 228761708. Its totient is φ = 65360484.

The previous prime is 130720943. The next prime is 130720981. The reversal of 130720972 is 279027031.

130720972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16340118 + ... + 16340125.

Almost surely, 2^130720972 is an apocalyptic number.

It is an amenable number.

130720972 is a deficient number, since it is larger than the sum of its proper divisors (98040736).

130720972 is a wasteful number, since it uses less digits than its factorization.

130720972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32680247 (or 32680245 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 130720972 is about 11433.3272497554. The cubic root of 130720972 is about 507.5144626097.

The spelling of 130720972 in words is "one hundred thirty million, seven hundred twenty thousand, nine hundred seventy-two".