72253732 has 24 divisors (see below), whose sum is σ = 137692800. Its totient is φ = 33044256.

The previous prime is 72253691. The next prime is 72253733. The reversal of 72253732 is 23735227.

It is a junction number, because it is equal to n+sod(n) for n = 72253694 and 72253703.

It is not an unprimeable number, because it can be changed into a prime (72253733) 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, 14188 + ... + 18595.

It is an arithmetic number, because the mean of its divisors is an integer number (5737200).

Almost surely, 2^72253732 is an apocalyptic number.

It is an amenable number.

72253732 is a deficient number, since it is larger than the sum of its proper divisors (65439068).

72253732 is a wasteful number, since it uses less digits than its factorization.

72253732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32835 (or 32833 counting only the distinct ones).

The product of its digits is 17640, while the sum is 31.

The square root of 72253732 is about 8500.2195265769. The cubic root of 72253732 is about 416.5048804064.

Adding to 72253732 its reverse (23735227), we get a palindrome (95988959).

The spelling of 72253732 in words is "seventy-two million, two hundred fifty-three thousand, seven hundred thirty-two".