72934155 has 64 divisors (see below), whose sum is σ = 149713920. Its totient is φ = 32997888.

The previous prime is 72934153. The next prime is 72934171. The reversal of 72934155 is 55143927.

It is not a de Polignac number, because 72934155 - 2¹ = 72934153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72934151) 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, 106444 + ... + 107126.

It is an arithmetic number, because the mean of its divisors is an integer number (2339280).

Almost surely, 2^72934155 is an apocalyptic number.

72934155 is an abundant number, since it is smaller than the sum of its proper divisors (76779765).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72934155 is a wasteful number, since it uses less digits than its factorization.

72934155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 811 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 72934155 is about 8540.1495888538. The cubic root of 72934155 is about 417.8082249488.

The spelling of 72934155 in words is "seventy-two million, nine hundred thirty-four thousand, one hundred fifty-five".