72241173 has 32 divisors (see below), whose sum is σ = 114825600. Its totient is φ = 44748288.

The previous prime is 72241163. The next prime is 72241199. The reversal of 72241173 is 37114227.

It is a happy number.

It is not a de Polignac number, because 72241173 - 2⁹ = 72240661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72241123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25861 + ... + 28517.

It is an arithmetic number, because the mean of its divisors is an integer number (3588300).

Almost surely, 2^72241173 is an apocalyptic number.

It is an amenable number.

72241173 is a deficient number, since it is larger than the sum of its proper divisors (42584427).

72241173 is a wasteful number, since it uses less digits than its factorization.

72241173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2732 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 72241173 is about 8499.4807488458. The cubic root of 72241173 is about 416.4807469914.

The spelling of 72241173 in words is "seventy-two million, two hundred forty-one thousand, one hundred seventy-three".