731339972 has 72 divisors (see below), whose sum is σ = 1472916480. Its totient is φ = 317116800.

The previous prime is 731339953. The next prime is 731339977. The reversal of 731339972 is 279933137.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (731339977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1185008 + ... + 1185624.

Almost surely, 2^731339972 is an apocalyptic number.

It is an amenable number.

731339972 is an abundant number, since it is smaller than the sum of its proper divisors (741576508).

731339972 is a wasteful number, since it uses less digits than its factorization.

731339972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 740 counting only the distinct ones).

The product of its digits is 214326, while the sum is 44.

The square root of 731339972 is about 27043.2980976803. The cubic root of 731339972 is about 900.9619229676.

The spelling of 731339972 in words is "seven hundred thirty-one million, three hundred thirty-nine thousand, nine hundred seventy-two".