13288890 has 16 divisors (see below), whose sum is σ = 31893408. Its totient is φ = 3543696.

The previous prime is 13288889. The next prime is 13288909. The reversal of 13288890 is 9888231.

It is a Curzon number.

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, 221452 + ... + 221511.

It is an arithmetic number, because the mean of its divisors is an integer number (1993338).

Almost surely, 2^13288890 is an apocalyptic number.

13288890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13288890 is an abundant number, since it is smaller than the sum of its proper divisors (18604518).

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

13288890 is a wasteful number, since it uses less digits than its factorization.

13288890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442973.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 13288890 is about 3645.3929829306. The cubic root of 13288890 is about 236.8624600310.

The spelling of 13288890 in words is "thirteen million, two hundred eighty-eight thousand, eight hundred ninety".