1224112640 has 40 divisors (see below), whose sum is σ = 2935007460. Its totient is φ = 489644032.

The previous prime is 1224112621. The next prime is 1224112657. The reversal of 1224112640 is 462114221.

It can be written as a sum of positive squares in 2 ways, for example, as 1193287936 + 30824704 = 34544^2 + 5552^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 236525 + ... + 241644.

Almost surely, 2^1224112640 is an apocalyptic number.

1224112640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224112640 is an abundant number, since it is smaller than the sum of its proper divisors (1710894820).

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

1224112640 is an frugal number, since it uses more digits than its factorization.

1224112640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478192 (or 478176 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1224112640 is about 34987.3211320901. The cubic root of 1224112640 is about 1069.7290605816.

Adding to 1224112640 its reverse (462114221), we get a palindrome (1686226861).

The spelling of 1224112640 in words is "one billion, two hundred twenty-four million, one hundred twelve thousand, six hundred forty".