256222348 has 12 divisors (see below), whose sum is σ = 449360800. Its totient is φ = 127833552.

The previous prime is 256222339. The next prime is 256222357. The reversal of 256222348 is 843222652.

It is an interprime number because it is at equal distance from previous prime (256222339) and next prime (256222357).

It is a super-2 number, since 2×256222348² = 131299783229266208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67323 + ... + 71026.

Almost surely, 2^256222348 is an apocalyptic number.

It is an amenable number.

256222348 is a deficient number, since it is larger than the sum of its proper divisors (193138452).

256222348 is a wasteful number, since it uses less digits than its factorization.

256222348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138816 (or 138814 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 256222348 is about 16006.9468669075. The cubic root of 256222348 is about 635.1441985541.

The spelling of 256222348 in words is "two hundred fifty-six million, two hundred twenty-two thousand, three hundred forty-eight".