12862590 has 96 divisors (see below), whose sum is σ = 34784640. Its totient is φ = 3040128.

The previous prime is 12862583. The next prime is 12862609. The reversal of 12862590 is 9526821.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 217981 + ... + 218039.

It is an arithmetic number, because the mean of its divisors is an integer number (362340).

Almost surely, 2^12862590 is an apocalyptic number.

12862590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12862590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17392320).

12862590 is an abundant number, since it is smaller than the sum of its proper divisors (21922050).

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

12862590 is a wasteful number, since it uses less digits than its factorization.

12862590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12862590 is about 3586.4453153506. The cubic root of 12862590 is about 234.3020790034.

The spelling of 12862590 in words is "twelve million, eight hundred sixty-two thousand, five hundred ninety".