12260520 has 48 divisors (see below), whose sum is σ = 39847860. Its totient is φ = 3269376.

The previous prime is 12260503. The next prime is 12260527. The reversal of 12260520 is 2506221.

It can be written as a sum of positive squares in 2 ways, for example, as 12068676 + 191844 = 3474^2 + 438^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12260493 and 12260502.

It is not an unprimeable number, because it can be changed into a prime (12260527) 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 11 ways as a sum of consecutive naturals, for example, 16669 + ... + 17388.

Almost surely, 2^12260520 is an apocalyptic number.

12260520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12260520 is an abundant number, since it is smaller than the sum of its proper divisors (27587340).

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

12260520 is a wasteful number, since it uses less digits than its factorization.

12260520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34074 (or 34067 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12260520 is about 3501.5025346271. The cubic root of 12260520 is about 230.5877845517.

Adding to 12260520 its reverse (2506221), we get a palindrome (14766741).

The spelling of 12260520 in words is "twelve million, two hundred sixty thousand, five hundred twenty".