256450 has 24 divisors (see below), whose sum is σ = 499968. Its totient is φ = 97680.

The previous prime is 256441. The next prime is 256469. The reversal of 256450 is 54652.

It is a super-3 number, since 3×256450³ = 50597535633375000, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039 + ... + 1261.

It is an arithmetic number, because the mean of its divisors is an integer number (20832).

2²⁵⁶⁴⁵⁰ is an apocalyptic number.

256450 is a deficient number, since it is larger than the sum of its proper divisors (243518).

256450 is a wasteful number, since it uses less digits than its factorization.

256450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 256450 is about 506.4089256717. The cubic root of 256450 is about 63.5332250125.

The spelling of 256450 in words is "two hundred fifty-six thousand, four hundred fifty".