72112872 has 32 divisors (see below), whose sum is σ = 194150880. Its totient is φ = 22188480.

The previous prime is 72112853. The next prime is 72112897. The reversal of 72112872 is 27821127.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115254 + ... + 115877.

It is an arithmetic number, because the mean of its divisors is an integer number (6067215).

Almost surely, 2^72112872 is an apocalyptic number.

It is an amenable number.

72112872 is an abundant number, since it is smaller than the sum of its proper divisors (122038008).

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

72112872 is a wasteful number, since it uses less digits than its factorization.

72112872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231153 (or 231149 counting only the distinct ones).

The product of its digits is 3136, while the sum is 30.

The square root of 72112872 is about 8491.9298160077. The cubic root of 72112872 is about 416.2340429814.

Adding to 72112872 its reverse (27821127), we get a palindrome (99933999).

The spelling of 72112872 in words is "seventy-two million, one hundred twelve thousand, eight hundred seventy-two".