181087072 has 24 divisors (see below), whose sum is σ = 357887376. Its totient is φ = 90195072.

The previous prime is 181087063. The next prime is 181087103. The reversal of 181087072 is 270780181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343 + ... + 19174.

It is an arithmetic number, because the mean of its divisors is an integer number (14911974).

Almost surely, 2^181087072 is an apocalyptic number.

It is an amenable number.

181087072 is a deficient number, since it is larger than the sum of its proper divisors (176800304).

181087072 is a wasteful number, since it uses less digits than its factorization.

181087072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790 (or 21782 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 181087072 is about 13456.8596633836. The cubic root of 181087072 is about 565.7559745005.

The spelling of 181087072 in words is "one hundred eighty-one million, eighty-seven thousand, seventy-two".