70531928 has 16 divisors (see below), whose sum is σ = 133532880. Its totient is φ = 34923168.

The previous prime is 70531883. The next prime is 70531999. The reversal of 70531928 is 82913507.

It is a congruent number.

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, 41975 + ... + 43622.

It is an arithmetic number, because the mean of its divisors is an integer number (8345805).

Almost surely, 2^70531928 is an apocalyptic number.

It is an amenable number.

70531928 is a deficient number, since it is larger than the sum of its proper divisors (63000952).

70531928 is a wasteful number, since it uses less digits than its factorization.

70531928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85706 (or 85702 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 70531928 is about 8398.3288813906. The cubic root of 70531928 is about 413.1698144956.

The spelling of 70531928 in words is "seventy million, five hundred thirty-one thousand, nine hundred twenty-eight".