256276266 has 8 divisors (see below), whose sum is σ = 512552544. Its totient is φ = 85425420.

The previous prime is 256276247. The next prime is 256276333. The reversal of 256276266 is 662672652.

It is a happy number.

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

256276266 is an admirable number.

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, 21356350 + ... + 21356361.

It is an arithmetic number, because the mean of its divisors is an integer number (64069068).

Almost surely, 2^256276266 is an apocalyptic number.

256276266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256276266 is a wasteful number, since it uses less digits than its factorization.

256276266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42712716.

The product of its digits is 362880, while the sum is 42.

The square root of 256276266 is about 16008.6309845658. The cubic root of 256276266 is about 635.1887474954.

The spelling of 256276266 in words is "two hundred fifty-six million, two hundred seventy-six thousand, two hundred sixty-six".