1226206256 has 60 divisors (see below), whose sum is σ = 2637664512. Its totient is φ = 551760000.

The previous prime is 1226206253. The next prime is 1226206259. The reversal of 1226206256 is 6526026221.

It is an interprime number because it is at equal distance from previous prime (1226206253) and next prime (1226206259).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226206253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192401 + ... + 198671.

Almost surely, 2^1226206256 is an apocalyptic number.

1226206256 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 1226206256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318832256).

1226206256 is an abundant number, since it is smaller than the sum of its proper divisors (1411458256).

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

1226206256 is a wasteful number, since it uses less digits than its factorization.

1226206256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6402 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1226206256 is about 35017.2279885202. The cubic root of 1226206256 is about 1070.3385704717.

The spelling of 1226206256 in words is "one billion, two hundred twenty-six million, two hundred six thousand, two hundred fifty-six".