381604032 has 84 divisors (see below), whose sum is σ = 1158169896. Its totient is φ = 119715840.

The previous prime is 381604021. The next prime is 381604087. The reversal of 381604032 is 230406183.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 381603987 and 381604005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9694 + ... + 29277.

Almost surely, 2^381604032 is an apocalyptic number.

381604032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

381604032 is an abundant number, since it is smaller than the sum of its proper divisors (776565864).

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

381604032 is a wasteful number, since it uses less digits than its factorization.

381604032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39006 (or 38993 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 381604032 is about 19534.6879166267. The cubic root of 381604032 is about 725.3333588644. Note that the first 4 decimals are identical.

The spelling of 381604032 in words is "three hundred eighty-one million, six hundred four thousand, thirty-two".