12585820 has 24 divisors (see below), whose sum is σ = 28463904. Its totient is φ = 4646976.

The previous prime is 12585817. The next prime is 12585829. The reversal of 12585820 is 2858521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12585829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23944 + ... + 24463.

It is an arithmetic number, because the mean of its divisors is an integer number (1185996).

Almost surely, 2^12585820 is an apocalyptic number.

12585820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12585820 is an abundant number, since it is smaller than the sum of its proper divisors (15878084).

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

12585820 is a wasteful number, since it uses less digits than its factorization.

12585820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48429 (or 48427 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 12585820 is about 3547.6499263597. The cubic root of 12585820 is about 232.6093523446.

The spelling of 12585820 in words is "twelve million, five hundred eighty-five thousand, eight hundred twenty".