731373740 has 12 divisors (see below), whose sum is σ = 1535884896. Its totient is φ = 292549488.

The previous prime is 731373739. The next prime is 731373743. The reversal of 731373740 is 47373137.

It is a self number, because there is not a number n which added to its sum of digits gives 731373740.

It is not an unprimeable number, because it can be changed into a prime (731373743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18284324 + ... + 18284363.

It is an arithmetic number, because the mean of its divisors is an integer number (127990408).

Almost surely, 2^731373740 is an apocalyptic number.

It is an amenable number.

731373740 is an abundant number, since it is smaller than the sum of its proper divisors (804511156).

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

731373740 is a wasteful number, since it uses less digits than its factorization.

731373740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36568696 (or 36568694 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 35.

The square root of 731373740 is about 27043.9224226073. The cubic root of 731373740 is about 900.9757893932.

The spelling of 731373740 in words is "seven hundred thirty-one million, three hundred seventy-three thousand, seven hundred forty".