1244621712 has 40 divisors (see below), whose sum is σ = 3216599680. Its totient is φ = 414702720.

The previous prime is 1244621669. The next prime is 1244621723. The reversal of 1244621712 is 2171264421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244621712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174537 + ... + 181527.

It is an arithmetic number, because the mean of its divisors is an integer number (80414992).

Almost surely, 2^1244621712 is an apocalyptic number.

1244621712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244621712 is an abundant number, since it is smaller than the sum of its proper divisors (1971977968).

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

1244621712 is a wasteful number, since it uses less digits than its factorization.

1244621712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711 (or 10705 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 1244621712 is about 35279.1965894917. The cubic root of 1244621712 is about 1075.6701678806.

The spelling of 1244621712 in words is "one billion, two hundred forty-four million, six hundred twenty-one thousand, seven hundred twelve".