47857892 has 12 divisors (see below), whose sum is σ = 83969340. Its totient is φ = 23866656.

The previous prime is 47857889. The next prime is 47857913. The reversal of 47857892 is 29875874.

It can be written as a sum of positive squares in 2 ways, for example, as 15413476 + 32444416 = 3926^2 + 5696^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47857892.

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, 13823 + ... + 16934.

It is an arithmetic number, because the mean of its divisors is an integer number (6997445).

Almost surely, 2^47857892 is an apocalyptic number.

It is an amenable number.

47857892 is a deficient number, since it is larger than the sum of its proper divisors (36111448).

47857892 is a wasteful number, since it uses less digits than its factorization.

47857892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31150 (or 31148 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 47857892 is about 6917.9398667522. The cubic root of 47857892 is about 363.0651149168.

The spelling of 47857892 in words is "forty-seven million, eight hundred fifty-seven thousand, eight hundred ninety-two".