72870218 has 8 divisors (see below), whose sum is σ = 109855200. Its totient is φ = 36251820.

The previous prime is 72870167. The next prime is 72870221. The reversal of 72870218 is 81207827.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91148 + ... + 91943.

It is an arithmetic number, because the mean of its divisors is an integer number (13731900).

Almost surely, 2^72870218 is an apocalyptic number.

72870218 is a deficient number, since it is larger than the sum of its proper divisors (36984982).

72870218 is a wasteful number, since it uses less digits than its factorization.

72870218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183292.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 72870218 is about 8536.4054496023. The cubic root of 72870218 is about 417.6861001167.

The spelling of 72870218 in words is "seventy-two million, eight hundred seventy thousand, two hundred eighteen".