72434544 has 240 divisors, whose sum is σ = 246984192. Its totient is φ = 18095616.

The previous prime is 72434543. The next prime is 72434573. The reversal of 72434544 is 44543427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72434543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 703197 + ... + 703299.

Almost surely, 2^72434544 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 72434544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123492096).

72434544 is an abundant number, since it is smaller than the sum of its proper divisors (174549648).

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

72434544 is a wasteful number, since it uses less digits than its factorization.

72434544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 151 counting only the distinct ones).

The product of its digits is 53760, while the sum is 33.

The square root of 72434544 is about 8510.8486063377. The cubic root of 72434544 is about 416.8520197917.

The spelling of 72434544 in words is "seventy-two million, four hundred thirty-four thousand, five hundred forty-four".