1244244340 has 48 divisors (see below), whose sum is σ = 2729841408. Its totient is φ = 475478784.

The previous prime is 1244244283. The next prime is 1244244347. The reversal of 1244244340 is 434424421.

It is a junction number, because it is equal to n+sod(n) for n = 1244244299 and 1244244308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244244347) 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, 708904 + ... + 710656.

It is an arithmetic number, because the mean of its divisors is an integer number (56871696).

Almost surely, 2^1244244340 is an apocalyptic number.

1244244340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244244340 is an abundant number, since it is smaller than the sum of its proper divisors (1485597068).

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

1244244340 is a wasteful number, since it uses less digits than its factorization.

1244244340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328 (or 3326 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1244244340 is about 35273.8478195958. The cubic root of 1244244340 is about 1075.5614417159.

Adding to 1244244340 its reverse (434424421), we get a palindrome (1678668761).

The spelling of 1244244340 in words is "one billion, two hundred forty-four million, two hundred forty-four thousand, three hundred forty".