731138272 has 24 divisors (see below), whose sum is σ = 1445045616. Its totient is φ = 364142592.

The previous prime is 731138263. The next prime is 731138299. The reversal of 731138272 is 272831137.

It is a happy number.

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, 36228 + ... + 52675.

It is an arithmetic number, because the mean of its divisors is an integer number (60210234).

Almost surely, 2^731138272 is an apocalyptic number.

It is an amenable number.

731138272 is a deficient number, since it is larger than the sum of its proper divisors (713907344).

731138272 is a wasteful number, since it uses less digits than its factorization.

731138272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89170 (or 89162 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 731138272 is about 27039.5686356125. The cubic root of 731138272 is about 900.8790883829.

The spelling of 731138272 in words is "seven hundred thirty-one million, one hundred thirty-eight thousand, two hundred seventy-two".