47831904 has 192 divisors, whose sum is σ = 152409600. Its totient is φ = 14547456.

The previous prime is 47831891. The next prime is 47831921. The reversal of 47831904 is 40913874.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 576247 + ... + 576329.

It is an arithmetic number, because the mean of its divisors is an integer number (793800).

Almost surely, 2^47831904 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 47831904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76204800).

47831904 is an abundant number, since it is smaller than the sum of its proper divisors (104577696).

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

47831904 is a wasteful number, since it uses less digits than its factorization.

47831904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 47831904 is about 6916.0613068422. The cubic root of 47831904 is about 362.9993852868. Note that the first 3 decimals are identical.

The spelling of 47831904 in words is "forty-seven million, eight hundred thirty-one thousand, nine hundred four".