13821726 has 8 divisors (see below), whose sum is σ = 27643464. Its totient is φ = 4607240.

The previous prime is 13821707. The next prime is 13821733. The reversal of 13821726 is 62712831.

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

13821726 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13821693 and 13821702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151805 + ... + 1151816.

It is an arithmetic number, because the mean of its divisors is an integer number (3455433).

Almost surely, 2^13821726 is an apocalyptic number.

13821726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13821726 is a wasteful number, since it uses less digits than its factorization.

13821726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303626.

The product of its digits is 4032, while the sum is 30.

The square root of 13821726 is about 3717.7581954721. The cubic root of 13821726 is about 239.9868395561.

The spelling of 13821726 in words is "thirteen million, eight hundred twenty-one thousand, seven hundred twenty-six".