72136344 has 64 divisors (see below), whose sum is σ = 206749440. Its totient is φ = 20545920.

The previous prime is 72136313. The next prime is 72136357. The reversal of 72136344 is 44363127.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87454 + ... + 88274.

It is an arithmetic number, because the mean of its divisors is an integer number (3230460).

Almost surely, 2^72136344 is an apocalyptic number.

It is an amenable number.

72136344 is an abundant number, since it is smaller than the sum of its proper divisors (134613096).

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

72136344 is a wasteful number, since it uses less digits than its factorization.

72136344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1356 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 72136344 is about 8493.3117215842. The cubic root of 72136344 is about 416.2791980528.

The spelling of 72136344 in words is "seventy-two million, one hundred thirty-six thousand, three hundred forty-four".