1244320450 has 24 divisors (see below), whose sum is σ = 2436250320. Its totient is φ = 471531600.

The previous prime is 1244320421. The next prime is 1244320453. The reversal of 1244320450 is 540234421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1244320453) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 653956 + ... + 655855.

It is an arithmetic number, because the mean of its divisors is an integer number (101510430).

Almost surely, 2^1244320450 is an apocalyptic number.

1244320450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1244320450 is a deficient number, since it is larger than the sum of its proper divisors (1191929870).

1244320450 is a wasteful number, since it uses less digits than its factorization.

1244320450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309842 (or 1309837 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1244320450 is about 35274.9266476913. The cubic root of 1244320450 is about 1075.5833718437.

Adding to 1244320450 its reverse (540234421), we get a palindrome (1784554871).

The spelling of 1244320450 in words is "one billion, two hundred forty-four million, three hundred twenty thousand, four hundred fifty".