13690026 has 32 divisors (see below), whose sum is σ = 34769280. Its totient is φ = 3911328.

The previous prime is 13689997. The next prime is 13690031. The reversal of 13690026 is 62009631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 17731 + ... + 18486.

It is an arithmetic number, because the mean of its divisors is an integer number (1086540).

Almost surely, 2^13690026 is an apocalyptic number.

13690026 is an abundant number, since it is smaller than the sum of its proper divisors (21079254).

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

13690026 is a wasteful number, since it uses less digits than its factorization.

13690026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36235 (or 36229 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13690026 is about 3700.0035135118. The cubic root of 13690026 is about 239.2221693043. Note that the first 3 decimals are identical.

Adding to 13690026 its reverse (62009631), we get a palindrome (75699657).

The spelling of 13690026 in words is "thirteen million, six hundred ninety thousand, twenty-six".