47785818 has 32 divisors (see below), whose sum is σ = 99601920. Its totient is φ = 15266880.

The previous prime is 47785799. The next prime is 47785841. The reversal of 47785818 is 81858774.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19096 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (3112560).

Almost surely, 2^47785818 is an apocalyptic number.

47785818 is an abundant number, since it is smaller than the sum of its proper divisors (51816102).

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

47785818 is a wasteful number, since it uses less digits than its factorization.

47785818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502.

The product of its digits is 501760, while the sum is 48.

The square root of 47785818 is about 6912.7286942278. The cubic root of 47785818 is about 362.8827646215.

The spelling of 47785818 in words is "forty-seven million, seven hundred eighty-five thousand, eight hundred eighteen".