256454 has 8 divisors (see below), whose sum is σ = 419688. Its totient is φ = 116560.

The previous prime is 256441. The next prime is 256469. The reversal of 256454 is 454652.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256454.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 5807 + ... + 5850.

It is an arithmetic number, because the mean of its divisors is an integer number (52461).

2²⁵⁶⁴⁵⁴ is an apocalyptic number.

256454 is a deficient number, since it is larger than the sum of its proper divisors (163234).

256454 is a wasteful number, since it uses less digits than its factorization.

256454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11670.

The product of its digits is 4800, while the sum is 26.

The square root of 256454 is about 506.4128750338. The cubic root of 256454 is about 63.5335553324.

The spelling of 256454 in words is "two hundred fifty-six thousand, four hundred fifty-four".