1244961256 has 96 divisors (see below), whose sum is σ = 2946726720. Its totient is φ = 482676480.

The previous prime is 1244961247. The next prime is 1244961257. The reversal of 1244961256 is 6521694421.

It is not an unprimeable number, because it can be changed into a prime (1244961257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2120595 + ... + 2121181.

It is an arithmetic number, because the mean of its divisors is an integer number (30695070).

Almost surely, 2^1244961256 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 1244961256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473363360).

1244961256 is an abundant number, since it is smaller than the sum of its proper divisors (1701765464).

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

1244961256 is a wasteful number, since it uses less digits than its factorization.

1244961256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 920 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 1244961256 is about 35284.0085024363. The cubic root of 1244961256 is about 1075.7679764864.

The spelling of 1244961256 in words is "one billion, two hundred forty-four million, nine hundred sixty-one thousand, two hundred fifty-six".