47856842 has 8 divisors (see below), whose sum is σ = 78311232. Its totient is φ = 21753100.

The previous prime is 47856833. The next prime is 47856869. The reversal of 47856842 is 24865874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 47856793 and 47856802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087634 + ... + 1087677.

It is an arithmetic number, because the mean of its divisors is an integer number (9788904).

Almost surely, 2^47856842 is an apocalyptic number.

47856842 is a deficient number, since it is larger than the sum of its proper divisors (30454390).

47856842 is a wasteful number, since it uses less digits than its factorization.

47856842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175324.

The product of its digits is 430080, while the sum is 44.

The square root of 47856842 is about 6917.8639766911. The cubic root of 47856842 is about 363.0624596866.

The spelling of 47856842 in words is "forty-seven million, eight hundred fifty-six thousand, eight hundred forty-two".