72511742 has 8 divisors (see below), whose sum is σ = 108842736. Its totient is φ = 36230832.

The previous prime is 72511729. The next prime is 72511763. The reversal of 72511742 is 24711527.

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

It is a congruent number.

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, 8663 + ... + 14834.

It is an arithmetic number, because the mean of its divisors is an integer number (13605342).

Almost surely, 2^72511742 is an apocalyptic number.

72511742 is a deficient number, since it is larger than the sum of its proper divisors (36330994).

72511742 is a wasteful number, since it uses less digits than its factorization.

72511742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25042.

The product of its digits is 3920, while the sum is 29.

The square root of 72511742 is about 8515.3826690290. The cubic root of 72511742 is about 417.0000555910. Note that the first 4 decimals are identical.

Subtracting from 72511742 its sum of digits (29), we obtain a cube (72511713 = 417³).

The spelling of 72511742 in words is "seventy-two million, five hundred eleven thousand, seven hundred forty-two".