1236256112 has 80 divisors (see below), whose sum is σ = 2955144192. Its totient is φ = 487883520.

The previous prime is 1236256093. The next prime is 1236256117. The reversal of 1236256112 is 2116526321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1236256117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830633 + ... + 832119.

Almost surely, 2^1236256112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236256112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477572096).

1236256112 is an abundant number, since it is smaller than the sum of its proper divisors (1718888080).

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

1236256112 is a wasteful number, since it uses less digits than its factorization.

1236256112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2080 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1236256112 is about 35160.4338994842. The cubic root of 1236256112 is about 1073.2547450486.

The spelling of 1236256112 in words is "one billion, two hundred thirty-six million, two hundred fifty-six thousand, one hundred twelve".