1226120256 has 63 divisors (see below), whose sum is σ = 3516862791. Its totient is φ = 408426624.

The previous prime is 1226120219. The next prime is 1226120263. The reversal of 1226120256 is 6520216221.

The square root of 1226120256 is 35016.

It is a perfect power (a square), and thus also a powerful number.

1226120256 is a `hidden beast` number, since 1 + 22 + 612 + 0 + 25 + 6 = 666.

It is a super-3 number, since 3×1226120256³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 839655 + ... + 841113.

Almost surely, 2^1226120256 is an apocalyptic number.

1226120256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1226120256 is the 35016-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226120256

1226120256 is an abundant number, since it is smaller than the sum of its proper divisors (2290742535).

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

1226120256 is an frugal number, since it uses more digits than its factorization.

1226120256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The cubic root of 1226120256 is about 1070.3135471477.

Adding to 1226120256 its reverse (6520216221), we get a palindrome (7746336477).

The spelling of 1226120256 in words is "one billion, two hundred twenty-six million, one hundred twenty thousand, two hundred fifty-six".