12862890 has 48 divisors (see below), whose sum is σ = 33729696. Its totient is φ = 3400800.

The previous prime is 12862873. The next prime is 12862901. The reversal of 12862890 is 9826821.

12862890 is a `hidden beast` number, since 1 + 28 + 628 + 9 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11245 + ... + 12335.

It is an arithmetic number, because the mean of its divisors is an integer number (702702).

Almost surely, 2^12862890 is an apocalyptic number.

12862890 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 12862890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16864848).

12862890 is an abundant number, since it is smaller than the sum of its proper divisors (20866806).

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

12862890 is a wasteful number, since it uses less digits than its factorization.

12862890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12862890 is about 3586.4871392492. The cubic root of 12862890 is about 234.3039005670.

The spelling of 12862890 in words is "twelve million, eight hundred sixty-two thousand, eight hundred ninety".