1226339856 has 180 divisors, whose sum is σ = 4022313984. Its totient is φ = 347760000.

The previous prime is 1226339837. The next prime is 1226339867. The reversal of 1226339856 is 6589336221.

1226339856 is a `hidden beast` number, since 1 + 2 + 2 + 633 + 9 + 8 + 5 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1064881 + ... + 1066031.

Almost surely, 2^1226339856 is an apocalyptic number.

1226339856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226339856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2011156992).

1226339856 is an abundant number, since it is smaller than the sum of its proper divisors (2795974128).

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

1226339856 is a wasteful number, since it uses less digits than its factorization.

1226339856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 1314 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1226339856 is about 35019.1355690000. The cubic root of 1226339856 is about 1070.3774415939.

The spelling of 1226339856 in words is "one billion, two hundred twenty-six million, three hundred thirty-nine thousand, eight hundred fifty-six".