15398 has 4 divisors (see below), whose sum is σ = 23100.
Its totient is φ = 7698.
The previous prime is 15391. The next prime is 15401. The reversal of 15398 is 89351.
15398 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: 89351 = 199 ⋅449.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15391) by changing a digit.
15398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3848 + ... + 3851.
It is an arithmetic number, because the mean of its divisors is an integer number (5775).
215398 is an apocalyptic number.
15398 is a deficient number, since it is larger than the sum of its proper divisors (7702).
15398 is an equidigital number, since it uses as much as digits as its factorization.
15398 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7701.
The product of its digits is 1080, while the sum is 26.
The square root of 15398 is about 124.0886779686.
The cubic root of 15398 is about 24.8783422695.
The spelling of 15398 in words is "fifteen thousand, three hundred ninety-eight".