47684816 has 20 divisors (see below), whose sum is σ = 95576100. Its totient is φ = 23020032.

The previous prime is 47684809. The next prime is 47684821. The reversal of 47684816 is 61848674.

It can be written as a sum of positive squares in 2 ways, for example, as 25969216 + 21715600 = 5096^2 + 4660^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 50921 + ... + 51848.

It is an arithmetic number, because the mean of its divisors is an integer number (4778805).

Almost surely, 2^47684816 is an apocalyptic number.

It is an amenable number.

47684816 is an abundant number, since it is smaller than the sum of its proper divisors (47891284).

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

47684816 is a wasteful number, since it uses less digits than its factorization.

47684816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102806 (or 102800 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 47684816 is about 6905.4193210840. The cubic root of 47684816 is about 362.6269164791.

The spelling of 47684816 in words is "forty-seven million, six hundred eighty-four thousand, eight hundred sixteen".