72755284 has 12 divisors (see below), whose sum is σ = 145510624. Its totient is φ = 31180824.

The previous prime is 72755281. The next prime is 72755317. The reversal of 72755284 is 48255727.

It is a happy number.

72755284 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72755281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299174 + ... + 1299229.

Almost surely, 2^72755284 is an apocalyptic number.

It is an amenable number.

72755284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72755284 is a wasteful number, since it uses less digits than its factorization.

72755284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598414 (or 2598412 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 72755284 is about 8529.6708025574. The cubic root of 72755284 is about 417.4663871489.

The spelling of 72755284 in words is "seventy-two million, seven hundred fifty-five thousand, two hundred eighty-four".