47117880 has 96 divisors (see below), whose sum is σ = 162162000. Its totient is φ = 11824128.

The previous prime is 47117879. The next prime is 47117887. The reversal of 47117880 is 8871174.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47117887) 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, 2271 + ... + 9969.

Almost surely, 2^47117880 is an apocalyptic number.

47117880 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 47117880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81081000).

47117880 is an abundant number, since it is smaller than the sum of its proper divisors (115044120).

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

47117880 is a wasteful number, since it uses less digits than its factorization.

47117880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733 (or 7726 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 47117880 is about 6864.2464990704. The cubic root of 47117880 is about 361.1840642263.

The spelling of 47117880 in words is "forty-seven million, one hundred seventeen thousand, eight hundred eighty".