12903890 has 16 divisors (see below), whose sum is σ = 23621760. Its totient is φ = 5073840.

The previous prime is 12903887. The next prime is 12903911. The reversal of 12903890 is 9830921.

12903890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10346 + ... + 11525.

It is an arithmetic number, because the mean of its divisors is an integer number (1476360).

Almost surely, 2^12903890 is an apocalyptic number.

12903890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12903890 is a deficient number, since it is larger than the sum of its proper divisors (10717870).

12903890 is a wasteful number, since it uses less digits than its factorization.

12903890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21937.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 12903890 is about 3592.1984911750. The cubic root of 12903890 is about 234.5525816231.

The spelling of 12903890 in words is "twelve million, nine hundred three thousand, eight hundred ninety".