72236313 has 8 divisors (see below), whose sum is σ = 107016800. Its totient is φ = 48157524.

The previous prime is 72236279. The next prime is 72236317. The reversal of 72236313 is 31363227.

72236313 is a `hidden beast` number, since 7 + 2 + 23 + 631 + 3 = 666.

It is not a de Polignac number, because 72236313 - 2¹⁴ = 72219929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2675419 = 72236313 / (7 + 2 + 2 + 3 + 6 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72236317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337683 + ... + 1337736.

It is an arithmetic number, because the mean of its divisors is an integer number (13377100).

Almost surely, 2^72236313 is an apocalyptic number.

It is an amenable number.

72236313 is a deficient number, since it is larger than the sum of its proper divisors (34780487).

72236313 is a wasteful number, since it uses less digits than its factorization.

72236313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675428 (or 2675422 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 72236313 is about 8499.1948442191. The cubic root of 72236313 is about 416.4714072491.

The spelling of 72236313 in words is "seventy-two million, two hundred thirty-six thousand, three hundred thirteen".