72742452 has 48 divisors (see below), whose sum is σ = 172815552. Its totient is φ = 23811840.

The previous prime is 72742451. The next prime is 72742463. The reversal of 72742452 is 25424727.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72742451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232248 + ... + 232560.

It is an arithmetic number, because the mean of its divisors is an integer number (3600324).

Almost surely, 2^72742452 is an apocalyptic number.

It is an amenable number.

72742452 is an abundant number, since it is smaller than the sum of its proper divisors (100073100).

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

72742452 is a wasteful number, since it uses less digits than its factorization.

72742452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its digits is 31360, while the sum is 33.

The square root of 72742452 is about 8528.9185715423. The cubic root of 72742452 is about 417.4418425690.

The spelling of 72742452 in words is "seventy-two million, seven hundred forty-two thousand, four hundred fifty-two".