13902806 has 4 divisors (see below), whose sum is σ = 20854212. Its totient is φ = 6951402.

The previous prime is 13902797. The next prime is 13902809. The reversal of 13902806 is 60820931.

13902806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60820931 = 2543 ⋅23917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3475700 + ... + 3475703.

It is an arithmetic number, because the mean of its divisors is an integer number (5213553).

Almost surely, 2^13902806 is an apocalyptic number.

13902806 is a deficient number, since it is larger than the sum of its proper divisors (6951406).

13902806 is an equidigital number, since it uses as much as digits as its factorization.

13902806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951405.

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

The square root of 13902806 is about 3728.6466713809. The cubic root of 13902806 is about 240.4551893726.

The spelling of 13902806 in words is "thirteen million, nine hundred two thousand, eight hundred six".