731401072 has 20 divisors (see below), whose sum is σ = 1417818976. Its totient is φ = 365512320.

The previous prime is 731401057. The next prime is 731401079. The reversal of 731401072 is 270104137.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731401079) 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, 23497 + ... + 44887.

Almost surely, 2^731401072 is an apocalyptic number.

It is an amenable number.

731401072 is a deficient number, since it is larger than the sum of its proper divisors (686417904).

731401072 is a wasteful number, since it uses less digits than its factorization.

731401072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23536 (or 23530 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 731401072 is about 27044.4277439919. The cubic root of 731401072 is about 900.9870126398.

The spelling of 731401072 in words is "seven hundred thirty-one million, four hundred one thousand, seventy-two".