72316632 has 16 divisors (see below), whose sum is σ = 180791640. Its totient is φ = 24105536.

The previous prime is 72316631. The next prime is 72316681. The reversal of 72316632 is 23661327.

It is a self number, because there is not a number n which added to its sum of digits gives 72316632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72316631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1506573 + ... + 1506620.

Almost surely, 2^72316632 is an apocalyptic number.

It is an amenable number.

72316632 is an abundant number, since it is smaller than the sum of its proper divisors (108475008).

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

72316632 is a wasteful number, since it uses less digits than its factorization.

72316632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013202 (or 3013198 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 72316632 is about 8503.9186261394. The cubic root of 72316632 is about 416.6257071915.

Adding to 72316632 its reverse (23661327), we get a palindrome (95977959).

The spelling of 72316632 in words is "seventy-two million, three hundred sixteen thousand, six hundred thirty-two".