381278472 has 32 divisors (see below), whose sum is σ = 1003365600. Its totient is φ = 120403584.

The previous prime is 381278467. The next prime is 381278479. The reversal of 381278472 is 274872183.

It is not an unprimeable number, because it can be changed into a prime (381278479) 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, 417613 + ... + 418524.

It is an arithmetic number, because the mean of its divisors is an integer number (31355175).

Almost surely, 2^381278472 is an apocalyptic number.

It is an amenable number.

381278472 is an abundant number, since it is smaller than the sum of its proper divisors (622087128).

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

381278472 is a wasteful number, since it uses less digits than its factorization.

381278472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836165 (or 836161 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 381278472 is about 19526.3532693639. The cubic root of 381278472 is about 725.1270309316.

The spelling of 381278472 in words is "three hundred eighty-one million, two hundred seventy-eight thousand, four hundred seventy-two".