72543968 has 72 divisors (see below), whose sum is σ = 169159536. Its totient is φ = 29998080.

The previous prime is 72543953. The next prime is 72543973. The reversal of 72543968 is 86934527.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 215096 + ... + 215432.

It is an arithmetic number, because the mean of its divisors is an integer number (2349438).

Almost surely, 2^72543968 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 72543968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84579768).

72543968 is an abundant number, since it is smaller than the sum of its proper divisors (96615568).

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

72543968 is a wasteful number, since it uses less digits than its factorization.

72543968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 377 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 72543968 is about 8517.2746814929. The cubic root of 72543968 is about 417.0618214658.

The spelling of 72543968 in words is "seventy-two million, five hundred forty-three thousand, nine hundred sixty-eight".