70812972 has 18 divisors (see below), whose sum is σ = 178999548. Its totient is φ = 23604312.

The previous prime is 70812953. The next prime is 70813031. The reversal of 70812972 is 27921807.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1967027 = 70812972 / (7 + 0 + 8 + 1 + 2 + 9 + 7 + 2).

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, 983478 + ... + 983549.

Almost surely, 2^70812972 is an apocalyptic number.

It is an amenable number.

70812972 is an abundant number, since it is smaller than the sum of its proper divisors (108186576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70812972 is a wasteful number, since it uses less digits than its factorization.

70812972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967037 (or 1967032 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70812972 is about 8415.0443849097. The cubic root of 70812972 is about 413.7178642024.

The spelling of 70812972 in words is "seventy million, eight hundred twelve thousand, nine hundred seventy-two".