13638290 has 16 divisors (see below), whose sum is σ = 24591168. Its totient is φ = 5445936.

The previous prime is 13638277. The next prime is 13638293. The reversal of 13638290 is 9283631.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13638293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9989 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (1536948).

Almost surely, 2^13638290 is an apocalyptic number.

13638290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13638290 is a deficient number, since it is larger than the sum of its proper divisors (10952878).

13638290 is a wasteful number, since it uses less digits than its factorization.

13638290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13638290 is about 3693.0055510383. The cubic root of 13638290 is about 238.9204405975.

The spelling of 13638290 in words is "thirteen million, six hundred thirty-eight thousand, two hundred ninety".