47188818 has 40 divisors (see below), whose sum is σ = 111310320. Its totient is φ = 14900760.

The previous prime is 47188811. The next prime is 47188861. The reversal of 47188818 is 81888174.

It is not an unprimeable number, because it can be changed into a prime (47188811) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4588 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (2782758).

Almost surely, 2^47188818 is an apocalyptic number.

47188818 is an abundant number, since it is smaller than the sum of its proper divisors (64121502).

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

47188818 is a wasteful number, since it uses less digits than its factorization.

47188818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15364 (or 15355 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 47188818 is about 6869.4117652096. The cubic root of 47188818 is about 361.3652327319.

It can be divided in two parts, 471888 and 18, that added together give a triangular number (471906 = T₉₇₁).

The spelling of 47188818 in words is "forty-seven million, one hundred eighty-eight thousand, eight hundred eighteen".