72133044 has 24 divisors (see below), whose sum is σ = 177169440. Its totient is φ = 22778784.

The previous prime is 72133043. The next prime is 72133067. The reversal of 72133044 is 44033127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72133043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157959 + ... + 158414.

It is an arithmetic number, because the mean of its divisors is an integer number (7382060).

Almost surely, 2^72133044 is an apocalyptic number.

It is an amenable number.

72133044 is an abundant number, since it is smaller than the sum of its proper divisors (105036396).

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

72133044 is a wasteful number, since it uses less digits than its factorization.

72133044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316399 (or 316397 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 72133044 is about 8493.1174488523. The cubic root of 72133044 is about 416.2728501556.

The spelling of 72133044 in words is "seventy-two million, one hundred thirty-three thousand, forty-four".