12200520 has 64 divisors (see below), whose sum is σ = 36832320. Its totient is φ = 3233024.

The previous prime is 12200483. The next prime is 12200521. The reversal of 12200520 is 2500221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12200496 and 12200505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34987 + ... + 35333.

It is an arithmetic number, because the mean of its divisors is an integer number (575505).

Almost surely, 2^12200520 is an apocalyptic number.

12200520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12200520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18416160).

12200520 is an abundant number, since it is smaller than the sum of its proper divisors (24631800).

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

12200520 is a wasteful number, since it uses less digits than its factorization.

12200520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 12200520 is about 3492.9242763049. The cubic root of 12200520 is about 230.2110224611.

Adding to 12200520 its reverse (2500221), we get a palindrome (14700741).

It can be divided in two parts, 12200 and 520, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12200520 in words is "twelve million, two hundred thousand, five hundred twenty".