47170872 has 96 divisors (see below), whose sum is σ = 147120480. Its totient is φ = 13374720.

The previous prime is 47170859. The next prime is 47170883. The reversal of 47170872 is 27807174.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86922 + ... + 87462.

It is an arithmetic number, because the mean of its divisors is an integer number (1532505).

Almost surely, 2^47170872 is an apocalyptic number.

47170872 is a gapful number since it is divisible by the number (42) 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 47170872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73560240).

47170872 is an abundant number, since it is smaller than the sum of its proper divisors (99949608).

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

47170872 is a wasteful number, since it uses less digits than its factorization.

47170872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 47170872 is about 6868.1054156150. The cubic root of 47170872 is about 361.3194176214.

The spelling of 47170872 in words is "forty-seven million, one hundred seventy thousand, eight hundred seventy-two".