72499312 has 20 divisors (see below), whose sum is σ = 146575440. Its totient is φ = 34673408.

The previous prime is 72499277. The next prime is 72499319. The reversal of 72499312 is 21399427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72499319) 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, 98137 + ... + 98872.

It is an arithmetic number, because the mean of its divisors is an integer number (7328772).

Almost surely, 2^72499312 is an apocalyptic number.

It is an amenable number.

72499312 is an abundant number, since it is smaller than the sum of its proper divisors (74076128).

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

72499312 is a wasteful number, since it uses less digits than its factorization.

72499312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197040 (or 197034 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 72499312 is about 8514.6527821163. The cubic root of 72499312 is about 416.9762267749.

It can be divided in two parts, 7249 and 9312, that added together give a palindrome (16561).

The spelling of 72499312 in words is "seventy-two million, four hundred ninety-nine thousand, three hundred twelve".