250990 has 16 divisors (see below), whose sum is σ = 475920. Its totient is φ = 95040.

The previous prime is 250979. The next prime is 250993. The reversal of 250990 is 99052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250993) by changing a digit.

250990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471 + ... + 850.

It is an arithmetic number, because the mean of its divisors is an integer number (29745).

2²⁵⁰⁹⁹⁰ is an apocalyptic number.

250990 is a deficient number, since it is larger than the sum of its proper divisors (224930).

250990 is a wasteful number, since it uses less digits than its factorization.

250990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 250990 is about 500.9890218358. The cubic root of 250990 is about 63.0790977606.

The spelling of 250990 in words is "two hundred fifty thousand, nine hundred ninety".