15798 has 8 divisors (see below), whose sum is σ = 31608. Its totient is φ = 5264.

The previous prime is 15797. The next prime is 15803. The reversal of 15798 is 89751.

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

15798 is an admirable number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15791) 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, 1311 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (3951).

2¹⁵⁷⁹⁸ is an apocalyptic number.

15798 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 (15804).

15798 is a wasteful number, since it uses less digits than its factorization.

15798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638.

The product of its digits is 2520, while the sum is 30.

The square root of 15798 is about 125.6900950751. The cubic root of 15798 is about 25.0919282204.

The spelling of 15798 in words is "fifteen thousand, seven hundred ninety-eight".