1220683256 has 16 divisors (see below), whose sum is σ = 2464841400. Its totient is φ = 563392224.

The previous prime is 1220683213. The next prime is 1220683267. The reversal of 1220683256 is 6523860221.

It is a super-2 number, since 2×1220683256² = 2980135222957523072, which contains 22 as substring.

It is a congruent number.

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, 5868566 + ... + 5868773.

Almost surely, 2^1220683256 is an apocalyptic number.

It is an amenable number.

1220683256 is an abundant number, since it is smaller than the sum of its proper divisors (1244158144).

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

1220683256 is a wasteful number, since it uses less digits than its factorization.

1220683256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11737358 (or 11737354 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1220683256 is about 34938.2778052954. The cubic root of 1220683256 is about 1068.7291681541.

The spelling of 1220683256 in words is "one billion, two hundred twenty million, six hundred eighty-three thousand, two hundred fifty-six".