1226986256 has 20 divisors (see below), whose sum is σ = 2502406800. Its totient is φ = 581203872.

The previous prime is 1226986177. The next prime is 1226986283. The reversal of 1226986256 is 6526896221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1226986256.

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, 2017766 + ... + 2018373.

It is an arithmetic number, because the mean of its divisors is an integer number (125120340).

Almost surely, 2^1226986256 is an apocalyptic number.

1226986256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1226986256 is an abundant number, since it is smaller than the sum of its proper divisors (1275420544).

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

1226986256 is a wasteful number, since it uses less digits than its factorization.

1226986256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036166 (or 4036160 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 1226986256 is about 35028.3635929514. The cubic root of 1226986256 is about 1070.5654727898.

The spelling of 1226986256 in words is "one billion, two hundred twenty-six million, nine hundred eighty-six thousand, two hundred fifty-six".