380890 has 16 divisors (see below), whose sum is σ = 703080. Its totient is φ = 148480.

The previous prime is 380881. The next prime is 380909. The reversal of 380890 is 98083.

380890 = 274² + 275² + ... + 278².

It can be written as a sum of positive squares in 4 ways, for example, as 88209 + 292681 = 297^2 + 541^2 .

It is a congruent number.

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, 55 + ... + 874.

2³⁸⁰⁸⁹⁰ is an apocalyptic number.

380890 is a deficient number, since it is larger than the sum of its proper divisors (322190).

380890 is a wasteful number, since it uses less digits than its factorization.

380890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 380890 is about 617.1628634323. The cubic root of 380890 is about 72.4880677945.

The spelling of 380890 in words is "three hundred eighty thousand, eight hundred ninety".