23098 has 4 divisors (see below), whose sum is σ = 34650. Its totient is φ = 11548.

The previous prime is 23087. The next prime is 23099. The reversal of 23098 is 89032.

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

It can be written as a sum of positive squares in only one way, i.e., 13689 + 9409 = 117^2 + 97^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (23099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5773 + ... + 5776.

2²³⁰⁹⁸ is an apocalyptic number.

23098 is a deficient number, since it is larger than the sum of its proper divisors (11552).

23098 is a wasteful number, since it uses less digits than its factorization.

23098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 23098 is about 151.9802618763. The cubic root of 23098 is about 28.4790037210.

The spelling of 23098 in words is "twenty-three thousand, ninety-eight".