1224030440 has 16 divisors (see below), whose sum is σ = 2754068580. Its totient is φ = 489612160.

The previous prime is 1224030427. The next prime is 1224030449. The reversal of 1224030440 is 440304221.

It can be written as a sum of positive squares in 2 ways, for example, as 1207006564 + 17023876 = 34742^2 + 4126^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1224030449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15300341 + ... + 15300420.

Almost surely, 2^1224030440 is an apocalyptic number.

1224030440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224030440 is an abundant number, since it is smaller than the sum of its proper divisors (1530038140).

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

1224030440 is a wasteful number, since it uses less digits than its factorization.

1224030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30600772 (or 30600768 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1224030440 is about 34986.1464011114. The cubic root of 1224030440 is about 1069.7051156999.

Adding to 1224030440 its reverse (440304221), we get a palindrome (1664334661).

The spelling of 1224030440 in words is "one billion, two hundred twenty-four million, thirty thousand, four hundred forty".