12803890 has 64 divisors (see below), whose sum is σ = 27433728. Its totient is φ = 4249600.

The previous prime is 12803867. The next prime is 12803897. The reversal of 12803890 is 9830821.

It is not an unprimeable number, because it can be changed into a prime (12803897) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 76587 + ... + 76753.

It is an arithmetic number, because the mean of its divisors is an integer number (428652).

Almost surely, 2^12803890 is an apocalyptic number.

12803890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12803890 is an abundant number, since it is smaller than the sum of its proper divisors (14629838).

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

12803890 is a wasteful number, since it uses less digits than its factorization.

12803890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12803890 is about 3578.2523667288. The cubic root of 12803890 is about 233.9451133840.

The spelling of 12803890 in words is "twelve million, eight hundred three thousand, eight hundred ninety".