72207232 has 32 divisors (see below), whose sum is σ = 147369600. Its totient is φ = 35220480.

The previous prime is 72207229. The next prime is 72207241. The reversal of 72207232 is 23270227.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 72207197 and 72207206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632 + ... + 12127.

It is an arithmetic number, because the mean of its divisors is an integer number (4605300).

Almost surely, 2^72207232 is an apocalyptic number.

It is an amenable number.

72207232 is an abundant number, since it is smaller than the sum of its proper divisors (75162368).

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

72207232 is a wasteful number, since it uses less digits than its factorization.

72207232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13814 (or 13802 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72207232 is about 8497.4838628855. The cubic root of 72207232 is about 416.4155118592.

Adding to 72207232 its reverse (23270227), we get a palindrome (95477459).

The spelling of 72207232 in words is "seventy-two million, two hundred seven thousand, two hundred thirty-two".