181404132 has 96 divisors (see below), whose sum is σ = 523686912. Its totient is φ = 47592576.

The previous prime is 181404109. The next prime is 181404163. The reversal of 181404132 is 231404181.

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, 308743 + ... + 309329.

It is an arithmetic number, because the mean of its divisors is an integer number (5455072).

Almost surely, 2^181404132 is an apocalyptic number.

181404132 is a gapful number since it is divisible by the number (12) 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 181404132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261843456).

181404132 is an abundant number, since it is smaller than the sum of its proper divisors (342282780).

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

181404132 is a wasteful number, since it uses less digits than its factorization.

181404132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 181404132 is about 13468.6351201597. The cubic root of 181404132 is about 566.0859704512.

The spelling of 181404132 in words is "one hundred eighty-one million, four hundred four thousand, one hundred thirty-two".