72744812 has 48 divisors (see below), whose sum is σ = 152577600. Its totient is φ = 30312576.

The previous prime is 72744809. The next prime is 72744869. The reversal of 72744812 is 21844727.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50048 + ... + 51480.

It is an arithmetic number, because the mean of its divisors is an integer number (3178700).

Almost surely, 2^72744812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72744812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76288800).

72744812 is an abundant number, since it is smaller than the sum of its proper divisors (79832788).

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

72744812 is a wasteful number, since it uses less digits than its factorization.

72744812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1479 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 72744812 is about 8529.0569232477. The cubic root of 72744812 is about 417.4463569072.

The spelling of 72744812 in words is "seventy-two million, seven hundred forty-four thousand, eight hundred twelve".