72747311 has 12 divisors (see below), whose sum is σ = 91134792. Its totient is φ = 57557808.

The previous prime is 72747307. The next prime is 72747317. The reversal of 72747311 is 11374727.

It is not a de Polignac number, because 72747311 - 2² = 72747307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72747317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56465 + ... + 57738.

It is an arithmetic number, because the mean of its divisors is an integer number (7594566).

Almost surely, 2^72747311 is an apocalyptic number.

72747311 is a deficient number, since it is larger than the sum of its proper divisors (18387481).

72747311 is a wasteful number, since it uses less digits than its factorization.

72747311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114230 (or 114223 counting only the distinct ones).

The product of its digits is 8232, while the sum is 32.

The square root of 72747311 is about 8529.2034211877. The cubic root of 72747311 is about 417.4511370259.

The spelling of 72747311 in words is "seventy-two million, seven hundred forty-seven thousand, three hundred eleven".