1115222240 has 48 divisors (see below), whose sum is σ = 2874236400. Its totient is φ = 405534720.

The previous prime is 1115222209. The next prime is 1115222249. The reversal of 1115222240 is 422225111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115222249) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 315065 + ... + 318584.

It is an arithmetic number, because the mean of its divisors is an integer number (59879925).

Almost surely, 2^1115222240 is an apocalyptic number.

1115222240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115222240 is an abundant number, since it is smaller than the sum of its proper divisors (1759014160).

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

1115222240 is a wasteful number, since it uses less digits than its factorization.

1115222240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633675 (or 633667 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1115222240 is about 33394.9433297917. The cubic root of 1115222240 is about 1037.0200197182.

Adding to 1115222240 its reverse (422225111), we get a palindrome (1537447351).

It can be divided in two parts, 11 and 15222240, that added together give a palindrome (15222251).

The spelling of 1115222240 in words is "one billion, one hundred fifteen million, two hundred twenty-two thousand, two hundred forty".