72313955 has 48 divisors (see below), whose sum is σ = 108247104. Its totient is φ = 46126080.

The previous prime is 72313949. The next prime is 72313957. The reversal of 72313955 is 55931327.

It is a happy number.

It is not a de Polignac number, because 72313955 - 2¹⁴ = 72297571 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (72313957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230879 + ... + 231191.

It is an arithmetic number, because the mean of its divisors is an integer number (2255148).

Almost surely, 2^72313955 is an apocalyptic number.

72313955 is a deficient number, since it is larger than the sum of its proper divisors (35933149).

72313955 is a wasteful number, since it uses less digits than its factorization.

72313955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 389 counting only the distinct ones).

The product of its digits is 28350, while the sum is 35.

The square root of 72313955 is about 8503.7612266573. The cubic root of 72313955 is about 416.6205662774.

The spelling of 72313955 in words is "seventy-two million, three hundred thirteen thousand, nine hundred fifty-five".