72512918 has 8 divisors (see below), whose sum is σ = 109490160. Its totient is φ = 36016200.

The previous prime is 72512917. The next prime is 72512929. The reversal of 72512918 is 81921527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72512917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119753 + ... + 120356.

It is an arithmetic number, because the mean of its divisors is an integer number (13686270).

Almost surely, 2^72512918 is an apocalyptic number.

72512918 is a deficient number, since it is larger than the sum of its proper divisors (36977242).

72512918 is a wasteful number, since it uses less digits than its factorization.

72512918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240262.

The product of its digits is 10080, while the sum is 35.

The square root of 72512918 is about 8515.4517202554. The cubic root of 72512918 is about 417.0023098899.

The spelling of 72512918 in words is "seventy-two million, five hundred twelve thousand, nine hundred eighteen".