1244254400 has 84 divisors (see below), whose sum is σ = 3071710392. Its totient is φ = 496066560.

The previous prime is 1244254399. The next prime is 1244254421. The reversal of 1244254400 is 44524421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244254400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 563699 + ... + 565901.

Almost surely, 2^1244254400 is an apocalyptic number.

1244254400 is a gapful number since it is divisible by the number (10) 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 1244254400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535855196).

1244254400 is an abundant number, since it is smaller than the sum of its proper divisors (1827455992).

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

1244254400 is a wasteful number, since it uses less digits than its factorization.

1244254400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1244254400 is about 35273.9904178702. The cubic root of 1244254400 is about 1075.5643404282.

Adding to 1244254400 its reverse (44524421), we get a palindrome (1288778821).

It can be divided in two parts, 124 and 4254400, that added together give a palindrome (4254524).

The spelling of 1244254400 in words is "one billion, two hundred forty-four million, two hundred fifty-four thousand, four hundred".