13203890 has 32 divisors (see below), whose sum is σ = 27682560. Its totient is φ = 4440384.

The previous prime is 13203887. The next prime is 13203901. The reversal of 13203890 is 9830231.

It is a super-2 number, since 2×13203890² = 348685422264200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1931 + ... + 5489.

It is an arithmetic number, because the mean of its divisors is an integer number (865080).

Almost surely, 2^13203890 is an apocalyptic number.

13203890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13203890 is an abundant number, since it is smaller than the sum of its proper divisors (14478670).

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

13203890 is a wasteful number, since it uses less digits than its factorization.

13203890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13203890 is about 3633.7157291126. The cubic root of 13203890 is about 236.3563633677.

The spelling of 13203890 in words is "thirteen million, two hundred three thousand, eight hundred ninety".