47285844 has 12 divisors (see below), whose sum is σ = 110333664. Its totient is φ = 15761944.

The previous prime is 47285831. The next prime is 47285873. The reversal of 47285844 is 44858274.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 47285796 and 47285805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970232 + ... + 1970255.

It is an arithmetic number, because the mean of its divisors is an integer number (9194472).

Almost surely, 2^47285844 is an apocalyptic number.

It is an amenable number.

47285844 is an abundant number, since it is smaller than the sum of its proper divisors (63047820).

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

47285844 is a wasteful number, since it uses less digits than its factorization.

47285844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940494 (or 3940492 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 47285844 is about 6876.4703155034. The cubic root of 47285844 is about 361.6127335982.

The spelling of 47285844 in words is "forty-seven million, two hundred eighty-five thousand, eight hundred forty-four".