12169620 has 144 divisors (see below), whose sum is σ = 40452048. Its totient is φ = 2949120.

The previous prime is 12169609. The next prime is 12169621. The reversal of 12169620 is 2696121.

12169620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 636804 + 11532816 = 798^2 + 3396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125412 + ... + 125508.

It is an arithmetic number, because the mean of its divisors is an integer number (280917).

Almost surely, 2^12169620 is an apocalyptic number.

12169620 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 12169620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20226024).

12169620 is an abundant number, since it is smaller than the sum of its proper divisors (28282428).

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

12169620 is a wasteful number, since it uses less digits than its factorization.

12169620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12169620 is about 3488.4982442306. The cubic root of 12169620 is about 230.0165079519.

The spelling of 12169620 in words is "twelve million, one hundred sixty-nine thousand, six hundred twenty".