47181132 has 72 divisors (see below), whose sum is σ = 125146112. Its totient is φ = 14968800.

The previous prime is 47181131. The next prime is 47181149. The reversal of 47181132 is 23118174.

It is a junction number, because it is equal to n+sod(n) for n = 47181096 and 47181105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47181131) 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, 74457 + ... + 75087.

Almost surely, 2^47181132 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 47181132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62573056).

47181132 is an abundant number, since it is smaller than the sum of its proper divisors (77964980).

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

47181132 is a wasteful number, since it uses less digits than its factorization.

47181132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 734 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 47181132 is about 6868.8523058805. The cubic root of 47181132 is about 361.3456122363.

The spelling of 47181132 in words is "forty-seven million, one hundred eighty-one thousand, one hundred thirty-two".