1224030240 has 72 divisors (see below), whose sum is σ = 4177008108. Its totient is φ = 326407680.

The previous prime is 1224030239. The next prime is 1224030253. The reversal of 1224030240 is 420304221.

1224030240 is a `hidden beast` number, since 1 + 22 + 403 + 0 + 240 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1221921936 + 2108304 = 34956^2 + 1452^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423571 + ... + 426450.

Almost surely, 2^1224030240 is an apocalyptic number.

1224030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224030240 is an abundant number, since it is smaller than the sum of its proper divisors (2952977868).

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

1224030240 is a wasteful number, since it uses less digits than its factorization.

1224030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850042 (or 850031 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1224030240 is about 34986.1435428371. The cubic root of 1224030240 is about 1069.7050574385.

Adding to 1224030240 its reverse (420304221), we get a palindrome (1644334461).

The spelling of 1224030240 in words is "one billion, two hundred twenty-four million, thirty thousand, two hundred forty".