256342274 has 8 divisors (see below), whose sum is σ = 389780940. Its totient is φ = 126415296.

The previous prime is 256342267. The next prime is 256342297. The reversal of 256342274 is 472243652.

256342274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214183225 + 42159049 = 14635^2 + 6493^2 .

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

It is a super-2 number, since 2×256342274² = 131422722878982152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877739 + ... + 878030.

Almost surely, 2^256342274 is an apocalyptic number.

256342274 is a deficient number, since it is larger than the sum of its proper divisors (133438666).

256342274 is a wasteful number, since it uses less digits than its factorization.

256342274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755844.

The product of its digits is 80640, while the sum is 35.

The square root of 256342274 is about 16010.6924897082. The cubic root of 256342274 is about 635.2432771121.

The spelling of 256342274 in words is "two hundred fifty-six million, three hundred forty-two thousand, two hundred seventy-four".