70312732 has 12 divisors (see below), whose sum is σ = 140625520. Its totient is φ = 30134016.

The previous prime is 70312729. The next prime is 70312747. The reversal of 70312732 is 23721307.

70312732 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 70312697 and 70312706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255557 + ... + 1255612.

Almost surely, 2^70312732 is an apocalyptic number.

It is an amenable number.

70312732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70312732 is a wasteful number, since it uses less digits than its factorization.

70312732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511180 (or 2511178 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 70312732 is about 8385.2687494200. The cubic root of 70312732 is about 412.7413600652.

The spelling of 70312732 in words is "seventy million, three hundred twelve thousand, seven hundred thirty-two".