47681688 has 64 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 15161600.

The previous prime is 47681681. The next prime is 47681701. The reversal of 47681688 is 88618674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47681681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45733 + ... + 46763.

It is an arithmetic number, because the mean of its divisors is an integer number (1950480).

Almost surely, 2^47681688 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 47681688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62415360).

47681688 is an abundant number, since it is smaller than the sum of its proper divisors (77149032).

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

47681688 is a wasteful number, since it uses less digits than its factorization.

47681688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1124 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 47681688 is about 6905.1928285892. The cubic root of 47681688 is about 362.6189871779.

The spelling of 47681688 in words is "forty-seven million, six hundred eighty-one thousand, six hundred eighty-eight".