47847816 has 48 divisors (see below), whose sum is σ = 130756860. Its totient is φ = 15805440.

The previous prime is 47847803. The next prime is 47847847. The reversal of 47847816 is 61874874.

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 980100 = 6846^2 + 990^2 .

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 11 ways as a sum of consecutive naturals, for example, 5196 + ... + 11076.

Almost surely, 2^47847816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47847816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65378430).

47847816 is an abundant number, since it is smaller than the sum of its proper divisors (82909044).

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

47847816 is a wasteful number, since it uses less digits than its factorization.

47847816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006 (or 5999 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 47847816 is about 6917.2115769290. The cubic root of 47847816 is about 363.0396332201.

The spelling of 47847816 in words is "forty-seven million, eight hundred forty-seven thousand, eight hundred sixteen".