72351996 has 24 divisors (see below), whose sum is σ = 172008144. Its totient is φ = 23662080.

The previous prime is 72351991. The next prime is 72352001. The reversal of 72351996 is 69915327.

It is an interprime number because it is at equal distance from previous prime (72351991) and next prime (72352001).

It is a super-2 number, since 2×72351996² = 10469622650368032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72351991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56245 + ... + 57516.

It is an arithmetic number, because the mean of its divisors is an integer number (7167006).

Almost surely, 2^72351996 is an apocalyptic number.

It is an amenable number.

72351996 is an abundant number, since it is smaller than the sum of its proper divisors (99656148).

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

72351996 is a wasteful number, since it uses less digits than its factorization.

72351996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113821 (or 113819 counting only the distinct ones).

The product of its digits is 102060, while the sum is 42.

The square root of 72351996 is about 8505.9976487182. The cubic root of 72351996 is about 416.6936083557.

The spelling of 72351996 in words is "seventy-two million, three hundred fifty-one thousand, nine hundred ninety-six".