12838820 has 24 divisors (see below), whose sum is σ = 27029184. Its totient is φ = 5122656.

The previous prime is 12838801. The next prime is 12838877. The reversal of 12838820 is 2883821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14099 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (1126216).

Almost surely, 2^12838820 is an apocalyptic number.

12838820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12838820 is an abundant number, since it is smaller than the sum of its proper divisors (14190364).

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

12838820 is a wasteful number, since it uses less digits than its factorization.

12838820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 12838820 is about 3583.1299167069. The cubic root of 12838820 is about 234.1576603272.

The spelling of 12838820 in words is "twelve million, eight hundred thirty-eight thousand, eight hundred twenty".