72975518 has 16 divisors (see below), whose sum is σ = 136473984. Its totient is φ = 28431960.

The previous prime is 72975517. The next prime is 72975559. The reversal of 72975518 is 81557927.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72975517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236780 + ... + 237087.

It is an arithmetic number, because the mean of its divisors is an integer number (8529624).

Almost surely, 2^72975518 is an apocalyptic number.

72975518 is a deficient number, since it is larger than the sum of its proper divisors (63498466).

72975518 is a wasteful number, since it uses less digits than its factorization.

72975518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473887.

The product of its digits is 176400, while the sum is 44.

The square root of 72975518 is about 8542.5709244934. The cubic root of 72975518 is about 417.8871936004.

The spelling of 72975518 in words is "seventy-two million, nine hundred seventy-five thousand, five hundred eighteen".