256696446 has 8 divisors (see below), whose sum is σ = 513392904. Its totient is φ = 85565480.

The previous prime is 256696423. The next prime is 256696471. The reversal of 256696446 is 644696652.

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

256696446 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 256696395 and 256696404.

It is a congruent 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, 21391365 + ... + 21391376.

It is an arithmetic number, because the mean of its divisors is an integer number (64174113).

Almost surely, 2^256696446 is an apocalyptic number.

256696446 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.

256696446 is a wasteful number, since it uses less digits than its factorization.

256696446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42782746.

The product of its digits is 1866240, while the sum is 48.

The square root of 256696446 is about 16021.7491554449. The cubic root of 256696446 is about 635.5357010418.

The spelling of 256696446 in words is "two hundred fifty-six million, six hundred ninety-six thousand, four hundred forty-six".