256468574 has 8 divisors (see below), whose sum is σ = 404950440. Its totient is φ = 121485096.

The previous prime is 256468573. The next prime is 256468627. The reversal of 256468574 is 475864652.

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

It is a super-2 number, since 2×256468574² = 131552258899186952, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256468573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374549 + ... + 3374624.

It is an arithmetic number, because the mean of its divisors is an integer number (50618805).

Almost surely, 2^256468574 is an apocalyptic number.

256468574 is a deficient number, since it is larger than the sum of its proper divisors (148481866).

256468574 is a wasteful number, since it uses less digits than its factorization.

256468574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749194.

The product of its digits is 1612800, while the sum is 47.

The square root of 256468574 is about 16014.6362431371. The cubic root of 256468574 is about 635.3475882369.

The spelling of 256468574 in words is "two hundred fifty-six million, four hundred sixty-eight thousand, five hundred seventy-four".