72474745 has 16 divisors (see below), whose sum is σ = 102601728. Its totient is φ = 48093120.

The previous prime is 72474719. The next prime is 72474761. The reversal of 72474745 is 54747427.

It is not a de Polignac number, because 72474745 - 2⁵ = 72474713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72474698 and 72474707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32314 + ... + 34483.

It is an arithmetic number, because the mean of its divisors is an integer number (6412608).

Almost surely, 2^72474745 is an apocalyptic number.

It is an amenable number.

72474745 is a deficient number, since it is larger than the sum of its proper divisors (30126983).

72474745 is a wasteful number, since it uses less digits than its factorization.

72474745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66840.

The product of its digits is 219520, while the sum is 40.

The square root of 72474745 is about 8513.2100291253. The cubic root of 72474745 is about 416.9291228233.

The spelling of 72474745 in words is "seventy-two million, four hundred seventy-four thousand, seven hundred forty-five".