12589820 has 12 divisors (see below), whose sum is σ = 26438664. Its totient is φ = 5035920.

The previous prime is 12589807. The next prime is 12589823. The reversal of 12589820 is 2898521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12589823) 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 3 ways as a sum of consecutive naturals, for example, 314726 + ... + 314765.

It is an arithmetic number, because the mean of its divisors is an integer number (2203222).

Almost surely, 2^12589820 is an apocalyptic number.

12589820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12589820 is an abundant number, since it is smaller than the sum of its proper divisors (13848844).

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

12589820 is a wasteful number, since it uses less digits than its factorization.

12589820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629500 (or 629498 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 12589820 is about 3548.2136350564. The cubic root of 12589820 is about 232.6339922133.

The spelling of 12589820 in words is "twelve million, five hundred eighty-nine thousand, eight hundred twenty".