47945218 has 8 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 23813700.

The previous prime is 47945203. The next prime is 47945239. The reversal of 47945218 is 81254974.

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, 79078 + ... + 79681.

It is an arithmetic number, because the mean of its divisors is an integer number (9049320).

Almost surely, 2^47945218 is an apocalyptic number.

47945218 is a deficient number, since it is larger than the sum of its proper divisors (24449342).

47945218 is a wasteful number, since it uses less digits than its factorization.

47945218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158912.

The product of its digits is 80640, while the sum is 40.

The square root of 47945218 is about 6924.2485512870. The cubic root of 47945218 is about 363.2858082963.

The spelling of 47945218 in words is "forty-seven million, nine hundred forty-five thousand, two hundred eighteen".