381647104 has 72 divisors (see below), whose sum is σ = 782933760. Its totient is φ = 185622528.

The previous prime is 381647051. The next prime is 381647111. The reversal of 381647104 is 401746183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381647104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285229 + ... + 2285395.

It is an arithmetic number, because the mean of its divisors is an integer number (10874080).

Almost surely, 2^381647104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381647104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391466880).

381647104 is an abundant number, since it is smaller than the sum of its proper divisors (401286656).

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

381647104 is a wasteful number, since it uses less digits than its factorization.

381647104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 381647104 is about 19535.7903346652. The cubic root of 381647104 is about 725.3606475200.

The spelling of 381647104 in words is "three hundred eighty-one million, six hundred forty-seven thousand, one hundred four".