1227800256 has 56 divisors (see below), whose sum is σ = 3251143104. Its totient is φ = 408940800.

The previous prime is 1227800221. The next prime is 1227800261. The reversal of 1227800256 is 6520087221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429231 + ... + 432081.

Almost surely, 2^1227800256 is an apocalyptic number.

1227800256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1227800256 is an abundant number, since it is smaller than the sum of its proper divisors (2023342848).

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

1227800256 is a wasteful number, since it uses less digits than its factorization.

1227800256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5099 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1227800256 is about 35039.9808219126. The cubic root of 1227800256 is about 1070.8021632045.

Adding to 1227800256 its reverse (6520087221), we get a palindrome (7747887477).

The spelling of 1227800256 in words is "one billion, two hundred twenty-seven million, eight hundred thousand, two hundred fifty-six".