1236256 has 24 divisors (see below), whose sum is σ = 2782080. Its totient is φ = 529728.

The previous prime is 1236239. The next prime is 1236259. The reversal of 1236256 is 6526321.

1236256 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 1236256.

It is not an unprimeable number, because it can be changed into a prime (1236259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2536 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

2^1236256 is an apocalyptic number.

1236256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1236256 is an abundant number, since it is smaller than the sum of its proper divisors (1545824).

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

1236256 is an equidigital number, since it uses as much as digits as its factorization.

1236256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536 (or 5528 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1236256 is about 1111.8704960561. The cubic root of 1236256 is about 107.3254712638.

The spelling of 1236256 in words is "one million, two hundred thirty-six thousand, two hundred fifty-six".