72745674 has 16 divisors (see below), whose sum is σ = 146469600. Its totient is φ = 24085520.

The previous prime is 72745657. The next prime is 72745679. The reversal of 72745674 is 47654727.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72745679) 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, 39792 + ... + 41579.

It is an arithmetic number, because the mean of its divisors is an integer number (9154350).

Almost surely, 2^72745674 is an apocalyptic number.

72745674 is an abundant number, since it is smaller than the sum of its proper divisors (73723926).

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

72745674 is a wasteful number, since it uses less digits than its factorization.

72745674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81525.

The product of its digits is 329280, while the sum is 42.

The square root of 72745674 is about 8529.1074562348. The cubic root of 72745674 is about 417.4480057641.

The spelling of 72745674 in words is "seventy-two million, seven hundred forty-five thousand, six hundred seventy-four".