47418840 has 192 divisors, whose sum is σ = 182108160. Its totient is φ = 10471680.

The previous prime is 47418757. The next prime is 47418853. The reversal of 47418840 is 4881474.

It is a happy number.

47418840 is a `hidden beast` number, since 474 + 188 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47418795 and 47418804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77817 + ... + 78423.

It is an arithmetic number, because the mean of its divisors is an integer number (948480).

Almost surely, 2^47418840 is an apocalyptic number.

47418840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47418840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91054080).

47418840 is an abundant number, since it is smaller than the sum of its proper divisors (134689320).

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

47418840 is a wasteful number, since it uses less digits than its factorization.

47418840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 47418840 is about 6886.1338935574. The cubic root of 47418840 is about 361.9514398198.

The spelling of 47418840 in words is "forty-seven million, four hundred eighteen thousand, eight hundred forty".