72742412 has 24 divisors (see below), whose sum is σ = 137121600. Its totient is φ = 33654096.

The previous prime is 72742387. The next prime is 72742433. The reversal of 72742412 is 21424727.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7862 + ... + 14397.

It is an arithmetic number, because the mean of its divisors is an integer number (5713400).

Almost surely, 2^72742412 is an apocalyptic number.

It is an amenable number.

72742412 is a deficient number, since it is larger than the sum of its proper divisors (64379188).

72742412 is a wasteful number, since it uses less digits than its factorization.

72742412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22325 (or 22323 counting only the distinct ones).

The product of its digits is 6272, while the sum is 29.

The square root of 72742412 is about 8528.9162265788. The cubic root of 72742412 is about 417.4417660540.

The spelling of 72742412 in words is "seventy-two million, seven hundred forty-two thousand, four hundred twelve".