12560220 has 36 divisors (see below), whose sum is σ = 38099880. Its totient is φ = 3349344.

The previous prime is 12560209. The next prime is 12560221. The reversal of 12560220 is 2206521.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 12560193 and 12560202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12560221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34710 + ... + 35069.

It is an arithmetic number, because the mean of its divisors is an integer number (1058330).

Almost surely, 2^12560220 is an apocalyptic number.

12560220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12560220 is an abundant number, since it is smaller than the sum of its proper divisors (25539660).

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

12560220 is a wasteful number, since it uses less digits than its factorization.

12560220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69794 (or 69789 counting only the distinct ones).

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

The square root of 12560220 is about 3544.0400674936. The cubic root of 12560220 is about 232.4515334285.

Adding to 12560220 its reverse (2206521), we get a palindrome (14766741).

The spelling of 12560220 in words is "twelve million, five hundred sixty thousand, two hundred twenty".