1244320432 has 20 divisors (see below), whose sum is σ = 2456360640. Its totient is φ = 610420928.

The previous prime is 1244320421. The next prime is 1244320453. The reversal of 1244320432 is 2340234421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1244320397 and 1244320406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732832 + ... + 734527.

It is an arithmetic number, because the mean of its divisors is an integer number (122818032).

Almost surely, 2^1244320432 is an apocalyptic number.

It is an amenable number.

1244320432 is a deficient number, since it is larger than the sum of its proper divisors (1212040208).

1244320432 is a wasteful number, since it uses less digits than its factorization.

1244320432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467420 (or 1467414 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1244320432 is about 35274.9263925525. The cubic root of 1244320432 is about 1075.5833666574.

Adding to 1244320432 its reverse (2340234421), we get a palindrome (3584554853).

The spelling of 1244320432 in words is "one billion, two hundred forty-four million, three hundred twenty thousand, four hundred thirty-two".