47138832 has 120 divisors (see below), whose sum is σ = 143871000. Its totient is φ = 14406912.

The previous prime is 47138827. The next prime is 47138843. The reversal of 47138832 is 23883174.

It can be written as a sum of positive squares in 4 ways, for example, as 24443136 + 22695696 = 4944^2 + 4764^2 .

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

It is a plaindrome in base 7.

It is a zygodrome in base 7.

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, 316294 + ... + 316442.

It is an arithmetic number, because the mean of its divisors is an integer number (1198925).

Almost surely, 2^47138832 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 47138832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71935500).

47138832 is an abundant number, since it is smaller than the sum of its proper divisors (96732168).

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

47138832 is a wasteful number, since it uses less digits than its factorization.

47138832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 167 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 47138832 is about 6865.7724984156. The cubic root of 47138832 is about 361.2375924347.

The spelling of 47138832 in words is "forty-seven million, one hundred thirty-eight thousand, eight hundred thirty-two".