72587218 has 32 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 31334160.

The previous prime is 72587183. The next prime is 72587219. The reversal of 72587218 is 81278527.

It is an alternating number because its digits alternate between odd and even.

It is a cake number, because a cake can be divided into 72587218 parts by 758 planar cuts.

It is not an unprimeable number, because it can be changed into a prime (72587219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84073 + ... + 84931.

It is an arithmetic number, because the mean of its divisors is an integer number (3900960).

Almost surely, 2^72587218 is an apocalyptic number.

72587218 is a deficient number, since it is larger than the sum of its proper divisors (52243502).

72587218 is a wasteful number, since it uses less digits than its factorization.

72587218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its digits is 62720, while the sum is 40.

The square root of 72587218 is about 8519.8132608643. The cubic root of 72587218 is about 417.1446877182.

The spelling of 72587218 in words is "seventy-two million, five hundred eighty-seven thousand, two hundred eighteen".