70312920 has 64 divisors (see below), whose sum is σ = 222048000. Its totient is φ = 17762688.

The previous prime is 70312919. The next prime is 70312973. The reversal of 70312920 is 2921307.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 13140 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (3469500).

Almost surely, 2^70312920 is an apocalyptic number.

It is an amenable number.

70312920 is an abundant number, since it is smaller than the sum of its proper divisors (151735080).

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

70312920 is a wasteful number, since it uses less digits than its factorization.

70312920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30872 (or 30868 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 70312920 is about 8385.2799595482. The cubic root of 70312920 is about 412.7417279232.

The spelling of 70312920 in words is "seventy million, three hundred twelve thousand, nine hundred twenty".