381272872 has 16 divisors (see below), whose sum is σ = 756939060. Its totient is φ = 179422464.

The previous prime is 381272833. The next prime is 381272893. The reversal of 381272872 is 278272183.

381272872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 300883716 + 80389156 = 17346^2 + 8966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401603 + ... + 1401874.

Almost surely, 2^381272872 is an apocalyptic number.

It is an amenable number.

381272872 is a deficient number, since it is larger than the sum of its proper divisors (375666188).

381272872 is a wasteful number, since it uses less digits than its factorization.

381272872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803500 (or 2803496 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 381272872 is about 19526.2098728862. The cubic root of 381272872 is about 725.1234808306.

The spelling of 381272872 in words is "three hundred eighty-one million, two hundred seventy-two thousand, eight hundred seventy-two".