381881088 has 72 divisors (see below), whose sum is σ = 1129310000. Its totient is φ = 127291392.

The previous prime is 381881083. The next prime is 381881089. The reversal of 381881088 is 880188183.

It is a happy number.

381881088 is digitally balanced in base 3, 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 (72).

It is not an unprimeable number, because it can be changed into a prime (381881083) 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, 20713 + ... + 34536.

Almost surely, 2^381881088 is an apocalyptic number.

It is an amenable number.

381881088 is an abundant number, since it is smaller than the sum of its proper divisors (747428912).

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

381881088 is an equidigital number, since it uses as much as digits as its factorization.

381881088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55274 (or 55254 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The square root of 381881088 is about 19541.7780153189. The cubic root of 381881088 is about 725.5088543414.

The spelling of 381881088 in words is "three hundred eighty-one million, eight hundred eighty-one thousand, eighty-eight".