72513746 has 8 divisors (see below), whose sum is σ = 112521420. Its totient is φ = 35006608.

The previous prime is 72513739. The next prime is 72513757. The reversal of 72513746 is 64731527.

It can be written as a sum of positive squares in 2 ways, for example, as 69072721 + 3441025 = 8311^2 + 1855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625061 + ... + 625176.

Almost surely, 2^72513746 is an apocalyptic number.

72513746 is a deficient number, since it is larger than the sum of its proper divisors (40007674).

72513746 is a wasteful number, since it uses less digits than its factorization.

72513746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250268.

The product of its digits is 35280, while the sum is 35.

The square root of 72513746 is about 8515.5003376196. The cubic root of 72513746 is about 417.0038970857.

The spelling of 72513746 in words is "seventy-two million, five hundred thirteen thousand, seven hundred forty-six".