72374155 has 16 divisors (see below), whose sum is σ = 99477504. Its totient is φ = 49517280.

The previous prime is 72374153. The next prime is 72374167. The reversal of 72374155 is 55147327.

It is not a de Polignac number, because 72374155 - 2¹ = 72374153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72374155.

It is not an unprimeable number, because it can be changed into a prime (72374153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15550 + ... + 19660.

It is an arithmetic number, because the mean of its divisors is an integer number (6217344).

Almost surely, 2^72374155 is an apocalyptic number.

72374155 is a deficient number, since it is larger than the sum of its proper divisors (27103349).

72374155 is a wasteful number, since it uses less digits than its factorization.

72374155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626.

The product of its digits is 29400, while the sum is 34.

The square root of 72374155 is about 8507.3001005019. The cubic root of 72374155 is about 416.7361437922.

The spelling of 72374155 in words is "seventy-two million, three hundred seventy-four thousand, one hundred fifty-five".