47311380 has 72 divisors (see below), whose sum is σ = 145690272. Its totient is φ = 12424896.

The previous prime is 47311379. The next prime is 47311393. The reversal of 47311380 is 8311374.

47311380 is a `hidden beast` number, since 473 + 113 + 80 = 666.

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, 10099 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (2023476).

Almost surely, 2^47311380 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 47311380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72845136).

47311380 is an abundant number, since it is smaller than the sum of its proper divisors (98378892).

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

47311380 is a wasteful number, since it uses less digits than its factorization.

47311380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005 (or 4000 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 47311380 is about 6878.3268314322. The cubic root of 47311380 is about 361.6778163674.

The spelling of 47311380 in words is "forty-seven million, three hundred eleven thousand, three hundred eighty".