1244344420 has 24 divisors (see below), whose sum is σ = 2850680448. Its totient is φ = 452488800.

The previous prime is 1244344391. The next prime is 1244344457. The reversal of 1244344420 is 244434421.

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, 2827836 + ... + 2828275.

It is an arithmetic number, because the mean of its divisors is an integer number (118778352).

Almost surely, 2^1244344420 is an apocalyptic number.

1244344420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244344420 is an abundant number, since it is smaller than the sum of its proper divisors (1606336028).

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

1244344420 is a wasteful number, since it uses less digits than its factorization.

1244344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656131 (or 5656129 counting only the distinct ones).

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

The square root of 1244344420 is about 35275.2664057977. The cubic root of 1244344420 is about 1075.5902783090.

Adding to 1244344420 its reverse (244434421), we get a palindrome (1488778841).

Subtracting from 1244344420 its reverse (244434421), we obtain a palindrome (999909999).

The spelling of 1244344420 in words is "one billion, two hundred forty-four million, three hundred forty-four thousand, four hundred twenty".