13206890 has 16 divisors (see below), whose sum is σ = 24592680. Its totient is φ = 5100480.

The previous prime is 13206889. The next prime is 13206917. The reversal of 13206890 is 9860231.

It can be written as a sum of positive squares in 4 ways, for example, as 7623121 + 5583769 = 2761^2 + 2363^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22481 + ... + 23060.

Almost surely, 2^13206890 is an apocalyptic number.

13206890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13206890 is a deficient number, since it is larger than the sum of its proper divisors (11385790).

13206890 is a wasteful number, since it uses less digits than its factorization.

13206890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45577.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13206890 is about 3634.1285062584. The cubic root of 13206890 is about 236.3742625221.

The spelling of 13206890 in words is "thirteen million, two hundred six thousand, eight hundred ninety".