72618032 has 10 divisors (see below), whose sum is σ = 140697468. Its totient is φ = 36309008.

The previous prime is 72617989. The next prime is 72618041. The reversal of 72618032 is 23081627.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72617986 and 72618004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269298 + ... + 2269329.

Almost surely, 2^72618032 is an apocalyptic number.

It is an amenable number.

72618032 is a deficient number, since it is larger than the sum of its proper divisors (68079436).

72618032 is a wasteful number, since it uses less digits than its factorization.

72618032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538635 (or 4538629 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72618032 is about 8521.6214419558. The cubic root of 72618032 is about 417.2037067315.

Adding to 72618032 its reverse (23081627), we get a palindrome (95699659).

The spelling of 72618032 in words is "seventy-two million, six hundred eighteen thousand, thirty-two".