47018844 has 72 divisors (see below), whose sum is σ = 127567440. Its totient is φ = 14556672.

The previous prime is 47018843. The next prime is 47018849. The reversal of 47018844 is 44881074.

It is a happy number.

47018844 is a `hidden beast` number, since 470 + 188 + 4 + 4 = 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 = 47018799 and 47018808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47018843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35604 + ... + 36900.

It is an arithmetic number, because the mean of its divisors is an integer number (1771770).

Almost surely, 2^47018844 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 47018844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63783720).

47018844 is an abundant number, since it is smaller than the sum of its proper divisors (80548596).

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

47018844 is a wasteful number, since it uses less digits than its factorization.

47018844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379 (or 1374 counting only the distinct ones).

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

The square root of 47018844 is about 6857.0288026229. The cubic root of 47018844 is about 360.9308318665.

The spelling of 47018844 in words is "forty-seven million, eighteen thousand, eight hundred forty-four".