72399336 has 16 divisors (see below), whose sum is σ = 180998400. Its totient is φ = 24133104.

The previous prime is 72399319. The next prime is 72399337. The reversal of 72399336 is 63399327.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (72399337) 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, 1508296 + ... + 1508343.

It is an arithmetic number, because the mean of its divisors is an integer number (11312400).

Almost surely, 2^72399336 is an apocalyptic number.

It is an amenable number.

72399336 is an abundant number, since it is smaller than the sum of its proper divisors (108599064).

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

72399336 is a wasteful number, since it uses less digits than its factorization.

72399336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016648 (or 3016644 counting only the distinct ones).

The product of its digits is 183708, while the sum is 42.

The square root of 72399336 is about 8508.7799360425. The cubic root of 72399336 is about 416.7844695886.

Subtracting from 72399336 its reverse (63399327), we obtain a palindrome (9000009).

The spelling of 72399336 in words is "seventy-two million, three hundred ninety-nine thousand, three hundred thirty-six".