381117072 has 80 divisors (see below), whose sum is σ = 1164032640. Its totient is φ = 105133056.

The previous prime is 381117053. The next prime is 381117073. The reversal of 381117072 is 270711183.

It is not an unprimeable number, because it can be changed into a prime (381117073) 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, 9813 + ... + 29300.

It is an arithmetic number, because the mean of its divisors is an integer number (14550408).

Almost surely, 2^381117072 is an apocalyptic number.

It is an amenable number.

381117072 is an abundant number, since it is smaller than the sum of its proper divisors (782915568).

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

381117072 is a wasteful number, since it uses less digits than its factorization.

381117072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39160 (or 39154 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 381117072 is about 19522.2199557325. The cubic root of 381117072 is about 725.0246980092.

The spelling of 381117072 in words is "three hundred eighty-one million, one hundred seventeen thousand, seventy-two".