47437818 has 16 divisors (see below), whose sum is σ = 95044320. Its totient is φ = 15784496.

The previous prime is 47437759. The next prime is 47437847. The reversal of 47437818 is 81873474.

It is a super-2 number, since 2×47437818² = 4500693153202248, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47437818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (5940270).

Almost surely, 2^47437818 is an apocalyptic number.

47437818 is an abundant number, since it is smaller than the sum of its proper divisors (47606502).

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

47437818 is a wasteful number, since it uses less digits than its factorization.

47437818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14061.

The product of its digits is 150528, while the sum is 42.

The square root of 47437818 is about 6887.5117422767. The cubic root of 47437818 is about 361.9997201955. Note that the first 3 decimals are identical.

It can be divided in two parts, 4743 and 7818, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 47437818 in words is "forty-seven million, four hundred thirty-seven thousand, eight hundred eighteen".