13901806 has 8 divisors (see below), whose sum is σ = 21950280. Its totient is φ = 6585048.

The previous prime is 13901803. The next prime is 13901819. The reversal of 13901806 is 60810931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13901803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182881 + ... + 182956.

It is an arithmetic number, because the mean of its divisors is an integer number (2743785).

Almost surely, 2^13901806 is an apocalyptic number.

13901806 is a deficient number, since it is larger than the sum of its proper divisors (8048474).

13901806 is a wasteful number, since it uses less digits than its factorization.

13901806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365858.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 13901806 is about 3728.5125720587. The cubic root of 13901806 is about 240.4494240867.

The spelling of 13901806 in words is "thirteen million, nine hundred one thousand, eight hundred six".