1113244240 has 20 divisors (see below), whose sum is σ = 2588293044. Its totient is φ = 445297664.

The previous prime is 1113244217. The next prime is 1113244241. The reversal of 1113244240 is 424423111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 327899664 + 785344576 = 18108^2 + 28024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113244241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6957697 + ... + 6957856.

Almost surely, 2^1113244240 is an apocalyptic number.

1113244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113244240 is an abundant number, since it is smaller than the sum of its proper divisors (1475048804).

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

1113244240 is a wasteful number, since it uses less digits than its factorization.

1113244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13915566 (or 13915560 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1113244240 is about 33365.3149243342. The cubic root of 1113244240 is about 1036.4065576859.

Adding to 1113244240 its reverse (424423111), we get a palindrome (1537667351).

The spelling of 1113244240 in words is "one billion, one hundred thirteen million, two hundred forty-four thousand, two hundred forty".