1247944704 has 224 divisors, whose sum is σ = 3680277120. Its totient is φ = 374341632.

The previous prime is 1247944703. The next prime is 1247944723. The reversal of 1247944704 is 4074497421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247944703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12115917 + ... + 12116019.

Almost surely, 2^1247944704 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 1247944704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840138560).

1247944704 is an abundant number, since it is smaller than the sum of its proper divisors (2432332416).

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

1247944704 is a wasteful number, since it uses less digits than its factorization.

1247944704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 1247944704 is about 35326.2608267561. The cubic root of 1247944704 is about 1076.6266210007.

The spelling of 1247944704 in words is "one billion, two hundred forty-seven million, nine hundred forty-four thousand, seven hundred four".