12159620 has 48 divisors (see below), whose sum is σ = 29332800. Its totient is φ = 4187520.

The previous prime is 12159611. The next prime is 12159647. The reversal of 12159620 is 2695121.

It is a self number, because there is not a number n which added to its sum of digits gives 12159620.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2726 + ... + 5634.

It is an arithmetic number, because the mean of its divisors is an integer number (611100).

Almost surely, 2^12159620 is an apocalyptic number.

12159620 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 12159620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14666400).

12159620 is an abundant number, since it is smaller than the sum of its proper divisors (17173180).

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

12159620 is a wasteful number, since it uses less digits than its factorization.

12159620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948 (or 2946 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12159620 is about 3487.0646681701. The cubic root of 12159620 is about 229.9534877591.

The spelling of 12159620 in words is "twelve million, one hundred fifty-nine thousand, six hundred twenty".