47284218 has 12 divisors (see below), whose sum is σ = 102449178. Its totient is φ = 15761400.

The previous prime is 47284201. The next prime is 47284229. The reversal of 47284218 is 81248274.

It can be written as a sum of positive squares in only one way, i.e., 40487769 + 6796449 = 6363^2 + 2607^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1313433 + ... + 1313468.

Almost surely, 2^47284218 is an apocalyptic number.

47284218 is an abundant number, since it is smaller than the sum of its proper divisors (55164960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47284218 is a wasteful number, since it uses less digits than its factorization.

47284218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626909 (or 2626906 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 47284218 is about 6876.3520852266. The cubic root of 47284218 is about 361.6085886717.

The spelling of 47284218 in words is "forty-seven million, two hundred eighty-four thousand, two hundred eighteen".