181132560 has 240 divisors, whose sum is σ = 705204864. Its totient is φ = 40808448.

The previous prime is 181132541. The next prime is 181132577. The reversal of 181132560 is 65231181.

181132560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 418104 + ... + 418536.

Almost surely, 2^181132560 is an apocalyptic number.

181132560 is a gapful number since it is divisible by the number (10) 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 181132560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352602432).

181132560 is an abundant number, since it is smaller than the sum of its proper divisors (524072304).

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

181132560 is a wasteful number, since it uses less digits than its factorization.

181132560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 181132560 is about 13458.5496989832. The cubic root of 181132560 is about 565.8033420513.

The spelling of 181132560 in words is "one hundred eighty-one million, one hundred thirty-two thousand, five hundred sixty".