73712544 has 144 divisors (see below), whose sum is σ = 216203904. Its totient is φ = 21903360.

The previous prime is 73712543. The next prime is 73712557. The reversal of 73712544 is 44521737.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73712543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1568329 + ... + 1568375.

It is an arithmetic number, because the mean of its divisors is an integer number (1501416).

Almost surely, 2^73712544 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 73712544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108101952).

73712544 is an abundant number, since it is smaller than the sum of its proper divisors (142491360).

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

73712544 is a wasteful number, since it uses less digits than its factorization.

73712544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 100 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 73712544 is about 8585.6009690644. The cubic root of 73712544 is about 419.2893196809.

The spelling of 73712544 in words is "seventy-three million, seven hundred twelve thousand, five hundred forty-four".