72791518 has 16 divisors (see below), whose sum is σ = 118301040. Its totient is φ = 33457536.

The previous prime is 72791507. The next prime is 72791519. The reversal of 72791518 is 81519727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72791519) 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, 23433 + ... + 26356.

It is an arithmetic number, because the mean of its divisors is an integer number (7393815).

Almost surely, 2^72791518 is an apocalyptic number.

72791518 is a deficient number, since it is larger than the sum of its proper divisors (45509522).

72791518 is a wasteful number, since it uses less digits than its factorization.

72791518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49851.

The product of its digits is 35280, while the sum is 40.

The square root of 72791518 is about 8531.7945357351. The cubic root of 72791518 is about 417.5356786414.

It can be divided in two parts, 7 and 2791518, that multiplied together give a triangular number (19540626 = T₆₂₅₁).

The spelling of 72791518 in words is "seventy-two million, seven hundred ninety-one thousand, five hundred eighteen".