256190 has 32 divisors (see below), whose sum is σ = 536544. Its totient is φ = 87040.

The previous prime is 256189. The next prime is 256199. The reversal of 256190 is 91652.

It is a super-2 number, since 2×256190² = 131266632200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1802 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (16767).

2²⁵⁶¹⁹⁰ is an apocalyptic number.

256190 is an abundant number, since it is smaller than the sum of its proper divisors (280354).

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

256190 is a wasteful number, since it uses less digits than its factorization.

256190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 256190 is about 506.1521510376. The cubic root of 256190 is about 63.5117468503.

The spelling of 256190 in words is "two hundred fifty-six thousand, one hundred ninety".