13951806 has 32 divisors (see below), whose sum is σ = 30682368. Its totient is φ = 4194240.

The previous prime is 13951799. The next prime is 13951811. The reversal of 13951806 is 60815931.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8271 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (958824).

Almost surely, 2^13951806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13951806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15341184).

13951806 is an abundant number, since it is smaller than the sum of its proper divisors (16730562).

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

13951806 is a wasteful number, since it uses less digits than its factorization.

13951806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13951806 is about 3735.2116405901. The cubic root of 13951806 is about 240.7373503790.

The spelling of 13951806 in words is "thirteen million, nine hundred fifty-one thousand, eight hundred six".