72473955 has 16 divisors (see below), whose sum is σ = 116169984. Its totient is φ = 38582240.

The previous prime is 72473927. The next prime is 72473957. The reversal of 72473955 is 55937427.

It is not a de Polignac number, because 72473955 - 2¹¹ = 72471907 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72473957) 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, 4690 + ... + 12920.

It is an arithmetic number, because the mean of its divisors is an integer number (7260624).

Almost surely, 2^72473955 is an apocalyptic number.

72473955 is a deficient number, since it is larger than the sum of its proper divisors (43696029).

72473955 is a wasteful number, since it uses less digits than its factorization.

72473955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8826.

The product of its digits is 264600, while the sum is 42.

The square root of 72473955 is about 8513.1636305195. The cubic root of 72473955 is about 416.9276079268.

The spelling of 72473955 in words is "seventy-two million, four hundred seventy-three thousand, nine hundred fifty-five".