1224040000 has 140 divisors (see below), whose sum is σ = 3085112448. Its totient is φ = 481600000.

The previous prime is 1224039919. The next prime is 1224040039. The reversal of 1224040000 is 404221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2839785 + ... + 2840215.

Almost surely, 2^1224040000 is an apocalyptic number.

1224040000 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 1224040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1542556224).

1224040000 is an abundant number, since it is smaller than the sum of its proper divisors (1861072448).

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

1224040000 is an frugal number, since it uses more digits than its factorization.

1224040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1224040000 is about 34986.2830263519. The cubic root of 1224040000 is about 1069.7079005855.

Adding to 1224040000 its reverse (404221), we get a palindrome (1224444221).

The spelling of 1224040000 in words is "one billion, two hundred twenty-four million, forty thousand".