1224501440 has 56 divisors (see below), whose sum is σ = 2921154432. Its totient is φ = 488908800.

The previous prime is 1224501433. The next prime is 1224501451. The reversal of 1224501440 is 441054221.

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 7 ways as a sum of consecutive naturals, for example, 189137 + ... + 195503.

It is an arithmetic number, because the mean of its divisors is an integer number (52163472).

Almost surely, 2^1224501440 is an apocalyptic number.

1224501440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224501440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460577216).

1224501440 is an abundant number, since it is smaller than the sum of its proper divisors (1696652992).

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

1224501440 is an equidigital number, since it uses as much as digits as its factorization.

1224501440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6985 (or 6975 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1224501440 is about 34992.8769894674. The cubic root of 1224501440 is about 1069.8423036006.

Adding to 1224501440 its reverse (441054221), we get a palindrome (1665555661).

The spelling of 1224501440 in words is "one billion, two hundred twenty-four million, five hundred one thousand, four hundred forty".