380845 has 8 divisors (see below), whose sum is σ = 465120. Its totient is φ = 299280.

The previous prime is 380843. The next prime is 380867. The reversal of 380845 is 548083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 380845 - 2¹ = 380843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380843) 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 7 ways as a sum of consecutive naturals, for example, 351 + ... + 940.

It is an arithmetic number, because the mean of its divisors is an integer number (58140).

2³⁸⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

380845 is a deficient number, since it is larger than the sum of its proper divisors (84275).

380845 is a wasteful number, since it uses less digits than its factorization.

380845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 380845 is about 617.1264052040. The cubic root of 380845 is about 72.4852129970.

It can be divided in two parts, 380 and 845, that added together give a triangular number (1225 = T₄₉).

The spelling of 380845 in words is "three hundred eighty thousand, eight hundred forty-five".