72043504 has 40 divisors (see below), whose sum is σ = 155184512. Its totient is φ = 32175360.

The previous prime is 72043493. The next prime is 72043507. The reversal of 72043504 is 40534027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72043507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862 + ... + 12034.

Almost surely, 2^72043504 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 72043504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77592256).

72043504 is an abundant number, since it is smaller than the sum of its proper divisors (83141008).

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

72043504 is a wasteful number, since it uses less digits than its factorization.

72043504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225 (or 11219 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 72043504 is about 8487.8444849090. The cubic root of 72043504 is about 416.1005365983.

The spelling of 72043504 in words is "seventy-two million, forty-three thousand, five hundred four".