72346155 has 64 divisors (see below), whose sum is σ = 142940160. Its totient is φ = 30514176.

The previous prime is 72346151. The next prime is 72346159. The reversal of 72346155 is 55164327.

It is an interprime number because it is at equal distance from previous prime (72346151) and next prime (72346159).

It is not a de Polignac number, because 72346155 - 2² = 72346151 is a prime.

It is a super-2 number, since 2×72346155² = 10467932286568050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72346151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69519 + ... + 70551.

It is an arithmetic number, because the mean of its divisors is an integer number (2233440).

Almost surely, 2^72346155 is an apocalyptic number.

72346155 is a deficient number, since it is larger than the sum of its proper divisors (70594005).

72346155 is a wasteful number, since it uses less digits than its factorization.

72346155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its digits is 25200, while the sum is 33.

The square root of 72346155 is about 8505.6542958199. The cubic root of 72346155 is about 416.6823947841.

The spelling of 72346155 in words is "seventy-two million, three hundred forty-six thousand, one hundred fifty-five".