256474 has 4 divisors (see below), whose sum is σ = 384714. Its totient is φ = 128236.

The previous prime is 256471. The next prime is 256483. The reversal of 256474 is 474652.

256474 = T₄₁₂ + T₄₁₃ + T₄₁₄.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 245025 + 11449 = 495^2 + 107^2 .

It is not an unprimeable number, because it can be changed into a prime (256471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64117 + ... + 64120.

2²⁵⁶⁴⁷⁴ is an apocalyptic number.

256474 is the 414-th centered triangular number.

256474 is a deficient number, since it is larger than the sum of its proper divisors (128240).

256474 is a wasteful number, since it uses less digits than its factorization.

256474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128239.

The product of its digits is 6720, while the sum is 28.

The square root of 256474 is about 506.4326213822. The cubic root of 256474 is about 63.5352068801.

It can be divided in two parts, 25647 and 4, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 256474 in words is "two hundred fifty-six thousand, four hundred seventy-four".