72617512 has 16 divisors (see below), whose sum is σ = 148536000. Its totient is φ = 33007920.

The previous prime is 72617483. The next prime is 72617513. The reversal of 72617512 is 21571627.

It is not an unprimeable number, because it can be changed into a prime (72617513) 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, 412512 + ... + 412687.

It is an arithmetic number, because the mean of its divisors is an integer number (9283500).

Almost surely, 2^72617512 is an apocalyptic number.

It is an amenable number.

72617512 is an abundant number, since it is smaller than the sum of its proper divisors (75918488).

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

72617512 is a wasteful number, since it uses less digits than its factorization.

72617512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825216 (or 825212 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 72617512 is about 8521.5909312757. The cubic root of 72617512 is about 417.2027108978.

The spelling of 72617512 in words is "seventy-two million, six hundred seventeen thousand, five hundred twelve".