380171904 has 128 divisors (see below), whose sum is σ = 1194134400. Its totient is φ = 104853504.

The previous prime is 380171903. The next prime is 380171917. The reversal of 380171904 is 409171083.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (380171903) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 75514 + ... + 80390.

It is an arithmetic number, because the mean of its divisors is an integer number (9329175).

Almost surely, 2^380171904 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 380171904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597067200).

380171904 is an abundant number, since it is smaller than the sum of its proper divisors (813962496).

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

380171904 is a wasteful number, since it uses less digits than its factorization.

380171904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930 (or 4918 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 380171904 is about 19497.9974356343. The cubic root of 380171904 is about 724.4248495947.

The spelling of 380171904 in words is "three hundred eighty million, one hundred seventy-one thousand, nine hundred four".