381120756 has 24 divisors (see below), whose sum is σ = 941592960. Its totient is φ = 119567232.

The previous prime is 381120743. The next prime is 381120763. The reversal of 381120756 is 657021183.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933916 + ... + 934323.

It is an arithmetic number, because the mean of its divisors is an integer number (39233040).

Almost surely, 2^381120756 is an apocalyptic number.

It is an amenable number.

381120756 is an abundant number, since it is smaller than the sum of its proper divisors (560472204).

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

381120756 is a wasteful number, since it uses less digits than its factorization.

381120756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868263 (or 1868261 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 381120756 is about 19522.3143095280. The cubic root of 381120756 is about 725.0270341089.

The spelling of 381120756 in words is "three hundred eighty-one million, one hundred twenty thousand, seven hundred fifty-six".