1113520520 has 32 divisors (see below), whose sum is σ = 2863339200. Its totient is φ = 381778368.

The previous prime is 1113520489. The next prime is 1113520523. The reversal of 1113520520 is 250253111.

It is a happy number.

It is a super-2 number, since 2×1113520520² = 2479855896922140800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1113520492 and 1113520501.

It is not an unprimeable number, because it can be changed into a prime (1113520523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1988150 + ... + 1988709.

It is an arithmetic number, because the mean of its divisors is an integer number (89479350).

Almost surely, 2^1113520520 is an apocalyptic number.

1113520520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113520520 is an abundant number, since it is smaller than the sum of its proper divisors (1749818680).

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

1113520520 is a wasteful number, since it uses less digits than its factorization.

1113520520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976877 (or 3976873 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1113520520 is about 33369.4548951582. The cubic root of 1113520520 is about 1036.4922875163.

Adding to 1113520520 its reverse (250253111), we get a palindrome (1363773631).

The spelling of 1113520520 in words is "one billion, one hundred thirteen million, five hundred twenty thousand, five hundred twenty".