381428932 has 24 divisors (see below), whose sum is σ = 713263320. Its totient is φ = 177845760.

The previous prime is 381428921. The next prime is 381428951. The reversal of 381428932 is 239824183.

It can be written as a sum of positive squares in 4 ways, for example, as 122412096 + 259016836 = 11064^2 + 16094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18319 + ... + 33142.

It is an arithmetic number, because the mean of its divisors is an integer number (29719305).

Almost surely, 2^381428932 is an apocalyptic number.

It is an amenable number.

381428932 is a deficient number, since it is larger than the sum of its proper divisors (331834388).

381428932 is a wasteful number, since it uses less digits than its factorization.

381428932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51591 (or 51589 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 381428932 is about 19530.2056312779. The cubic root of 381428932 is about 725.2224015272. Note that the first 3 decimals are identical.

It can be divided in two parts, 38142 and 8932, that added together give a palindrome (47074).

The spelling of 381428932 in words is "three hundred eighty-one million, four hundred twenty-eight thousand, nine hundred thirty-two".