72273624 has 32 divisors (see below), whose sum is σ = 182976000. Its totient is φ = 23785632.

The previous prime is 72273623. The next prime is 72273629. The reversal of 72273624 is 42637227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72273623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17164 + ... + 20955.

It is an arithmetic number, because the mean of its divisors is an integer number (5718000).

Almost surely, 2^72273624 is an apocalyptic number.

It is an amenable number.

72273624 is an abundant number, since it is smaller than the sum of its proper divisors (110702376).

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

72273624 is a wasteful number, since it uses less digits than its factorization.

72273624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38207 (or 38203 counting only the distinct ones).

The product of its digits is 28224, while the sum is 33.

The square root of 72273624 is about 8501.3895334822. The cubic root of 72273624 is about 416.5430992160.

The spelling of 72273624 in words is "seventy-two million, two hundred seventy-three thousand, six hundred twenty-four".