47842218 has 16 divisors (see below), whose sum is σ = 106316160. Its totient is φ = 15947388.

The previous prime is 47842213. The next prime is 47842241. The reversal of 47842218 is 81224874.

It is not an unprimeable number, because it can be changed into a prime (47842213) 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, 442930 + ... + 443037.

It is an arithmetic number, because the mean of its divisors is an integer number (6644760).

Almost surely, 2^47842218 is an apocalyptic number.

47842218 is an abundant number, since it is smaller than the sum of its proper divisors (58473942).

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

47842218 is a wasteful number, since it uses less digits than its factorization.

47842218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885978 (or 885972 counting only the distinct ones).

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

The square root of 47842218 is about 6916.8069222727. The cubic root of 47842218 is about 363.0254746141.

The spelling of 47842218 in words is "forty-seven million, eight hundred forty-two thousand, two hundred eighteen".