72399326 has 16 divisors (see below), whose sum is σ = 110602800. Its totient is φ = 35538048.

The previous prime is 72399319. The next prime is 72399337. The reversal of 72399326 is 62399327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23165 + ... + 26103.

It is an arithmetic number, because the mean of its divisors is an integer number (6912675).

Almost surely, 2^72399326 is an apocalyptic number.

72399326 is a deficient number, since it is larger than the sum of its proper divisors (38203474).

72399326 is a wasteful number, since it uses less digits than its factorization.

72399326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163.

The product of its digits is 122472, while the sum is 41.

The square root of 72399326 is about 8508.7793484142. The cubic root of 72399326 is about 416.7844503994.

Subtracting from 72399326 its reverse (62399327), we obtain a palindrome (9999999).

The spelling of 72399326 in words is "seventy-two million, three hundred ninety-nine thousand, three hundred twenty-six".