181087104 has 128 divisors (see below), whose sum is σ = 537482880. Its totient is φ = 53544960.

The previous prime is 181087103. The next prime is 181087117. The reversal of 181087104 is 401780181.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181087103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181134 + ... + 182130.

It is an arithmetic number, because the mean of its divisors is an integer number (4199085).

Almost surely, 2^181087104 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 181087104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268741440).

181087104 is an abundant number, since it is smaller than the sum of its proper divisors (356395776).

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

181087104 is a wasteful number, since it uses less digits than its factorization.

181087104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 181087104 is about 13456.8608523682. The cubic root of 181087104 is about 565.7560078255.

The spelling of 181087104 in words is "one hundred eighty-one million, eighty-seven thousand, one hundred four".