72742484 has 6 divisors (see below), whose sum is σ = 127299354. Its totient is φ = 36371240.

The previous prime is 72742477. The next prime is 72742493. The reversal of 72742484 is 48424727.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 30492484 = 6500^2 + 5522^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9092807 + ... + 9092814.

It is an arithmetic number, because the mean of its divisors is an integer number (21216559).

Almost surely, 2^72742484 is an apocalyptic number.

It is an amenable number.

72742484 is a deficient number, since it is larger than the sum of its proper divisors (54556870).

72742484 is a wasteful number, since it uses less digits than its factorization.

72742484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18185625 (or 18185623 counting only the distinct ones).

The product of its digits is 100352, while the sum is 38.

The square root of 72742484 is about 8528.9204475127. The cubic root of 72742484 is about 417.4419037810.

The spelling of 72742484 in words is "seventy-two million, seven hundred forty-two thousand, four hundred eighty-four".