47816172 has 144 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 13837824.

The previous prime is 47816159. The next prime is 47816183. The reversal of 47816172 is 27161874.

47816172 is a `hidden beast` number, since 478 + 16 + 172 = 666.

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

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, 605229 + ... + 605307.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^47816172 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 47816172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69189120).

47816172 is an abundant number, since it is smaller than the sum of its proper divisors (90562068).

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

47816172 is a wasteful number, since it uses less digits than its factorization.

47816172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 167 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 47816172 is about 6914.9238607522. The cubic root of 47816172 is about 362.9595838708.

The spelling of 47816172 in words is "forty-seven million, eight hundred sixteen thousand, one hundred seventy-two".