181380304 has 40 divisors (see below), whose sum is σ = 402781760. Its totient is φ = 77511168.

The previous prime is 181380299. The next prime is 181380307. The reversal of 181380304 is 403083181.

181380304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181380307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40312 + ... + 44584.

It is an arithmetic number, because the mean of its divisors is an integer number (10069544).

Almost surely, 2^181380304 is an apocalyptic number.

181380304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

181380304 is an abundant number, since it is smaller than the sum of its proper divisors (221401456).

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

181380304 is a wasteful number, since it uses less digits than its factorization.

181380304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 181380304 is about 13467.7505174398. The cubic root of 181380304 is about 566.0611836451.

The spelling of 181380304 in words is "one hundred eighty-one million, three hundred eighty thousand, three hundred four".