15726 has 8 divisors (see below), whose sum is σ = 31464. Its totient is φ = 5240.

The previous prime is 15683. The next prime is 15727. The reversal of 15726 is 62751.

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

15726 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15726.

It is not an unprimeable number, because it can be changed into a prime (15727) 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, 1305 + ... + 1316.

It is an arithmetic number, because the mean of its divisors is an integer number (3933).

2¹⁵⁷²⁶ is an apocalyptic number.

15726 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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15732).

15726 is a wasteful number, since it uses less digits than its factorization.

15726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626.

The product of its digits is 420, while the sum is 21.

The square root of 15726 is about 125.4033492376. The cubic root of 15726 is about 25.0537510170.

It can be divided in two parts, 15 and 726, that added together give a triangular number (741 = T₃₈).

The spelling of 15726 in words is "fifteen thousand, seven hundred twenty-six".