1244304420 has 24 divisors (see below), whose sum is σ = 3484052544. Its totient is φ = 331814496.

The previous prime is 1244304419. The next prime is 1244304427. The reversal of 1244304420 is 244034421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1244304427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10369144 + ... + 10369263.

It is an arithmetic number, because the mean of its divisors is an integer number (145168856).

Almost surely, 2^1244304420 is an apocalyptic number.

1244304420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244304420 is an abundant number, since it is smaller than the sum of its proper divisors (2239748124).

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

1244304420 is a wasteful number, since it uses less digits than its factorization.

1244304420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20738419 (or 20738417 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1244304420 is about 35274.6994317457. The cubic root of 1244304420 is about 1075.5787530776.

Adding to 1244304420 its reverse (244034421), we get a palindrome (1488338841).

The spelling of 1244304420 in words is "one billion, two hundred forty-four million, three hundred four thousand, four hundred twenty".