72746157 has 16 divisors (see below), whose sum is σ = 107811648. Its totient is φ = 43255680.

The previous prime is 72746143. The next prime is 72746161. The reversal of 72746157 is 75164727.

It is not a de Polignac number, because 72746157 - 2⁷ = 72746029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72746357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19048 + ... + 22545.

It is an arithmetic number, because the mean of its divisors is an integer number (6738228).

Almost surely, 2^72746157 is an apocalyptic number.

It is an amenable number.

72746157 is a deficient number, since it is larger than the sum of its proper divisors (35065491).

72746157 is a wasteful number, since it uses less digits than its factorization.

72746157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41660.

The product of its digits is 82320, while the sum is 39.

The square root of 72746157 is about 8529.1357709911. The cubic root of 72746157 is about 417.4489296538.

It can be divided in two parts, 7274 and 6157, that added together give a palindrome (13431).

The spelling of 72746157 in words is "seventy-two million, seven hundred forty-six thousand, one hundred fifty-seven".