23398 has 4 divisors (see below), whose sum is σ = 35100. Its totient is φ = 11698.

The previous prime is 23371. The next prime is 23399. The reversal of 23398 is 89332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5848 + ... + 5851.

It is an arithmetic number, because the mean of its divisors is an integer number (8775).

2²³³⁹⁸ is an apocalyptic number.

23398 is a deficient number, since it is larger than the sum of its proper divisors (11702).

23398 is a wasteful number, since it uses less digits than its factorization.

23398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11701.

The product of its digits is 1296, while the sum is 25.

The square root of 23398 is about 152.9640480636. The cubic root of 23398 is about 28.6017701482.

The spelling of 23398 in words is "twenty-three thousand, three hundred ninety-eight".