72455244 has 24 divisors (see below), whose sum is σ = 176413440. Its totient is φ = 23101584.

The previous prime is 72455237. The next prime is 72455249. The reversal of 72455244 is 44255427.

It is not an unprimeable number, because it can be changed into a prime (72455249) 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, 130984 + ... + 131535.

It is an arithmetic number, because the mean of its divisors is an integer number (7350560).

Almost surely, 2^72455244 is an apocalyptic number.

It is an amenable number.

72455244 is an abundant number, since it is smaller than the sum of its proper divisors (103958196).

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

72455244 is a wasteful number, since it uses less digits than its factorization.

72455244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262549 (or 262547 counting only the distinct ones).

The product of its digits is 44800, while the sum is 33.

The square root of 72455244 is about 8512.0646144164. The cubic root of 72455244 is about 416.8917246732.

The spelling of 72455244 in words is "seventy-two million, four hundred fifty-five thousand, two hundred forty-four".