72471232 has 28 divisors (see below), whose sum is σ = 148772880. Its totient is φ = 34985216.

The previous prime is 72471199. The next prime is 72471241. The reversal of 72471232 is 23217427.

It is a self number, because there is not a number n which added to its sum of digits gives 72471232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17668 + ... + 21379.

Almost surely, 2^72471232 is an apocalyptic number.

It is an amenable number.

72471232 is an abundant number, since it is smaller than the sum of its proper divisors (76301648).

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

72471232 is a wasteful number, since it uses less digits than its factorization.

72471232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39088 (or 39078 counting only the distinct ones).

The product of its digits is 4704, while the sum is 28.

The square root of 72471232 is about 8513.0037002224. The cubic root of 72471232 is about 416.9223862437.

Adding to 72471232 its reverse (23217427), we get a palindrome (95688659).

The spelling of 72471232 in words is "seventy-two million, four hundred seventy-one thousand, two hundred thirty-two".