72231796 has 24 divisors (see below), whose sum is σ = 155576960. Its totient is φ = 28575072.

The previous prime is 72231781. The next prime is 72231811. The reversal of 72231796 is 69713227.

It is an interprime number because it is at equal distance from previous prime (72231781) and next prime (72231811).

It is a congruent number.

It is an unprimeable number.

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, 98856 + ... + 99583.

Almost surely, 2^72231796 is an apocalyptic number.

It is an amenable number.

72231796 is an abundant number, since it is smaller than the sum of its proper divisors (83345164).

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

72231796 is a wasteful number, since it uses less digits than its factorization.

72231796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198463 (or 198461 counting only the distinct ones).

The product of its digits is 31752, while the sum is 37.

The square root of 72231796 is about 8498.9291090113. The cubic root of 72231796 is about 416.4627262940.

Subtracting from 72231796 its reverse (69713227), we obtain a square (2518569 = 1587²).

The spelling of 72231796 in words is "seventy-two million, two hundred thirty-one thousand, seven hundred ninety-six".