26998 has 4 divisors (see below), whose sum is σ = 40500. Its totient is φ = 13498.

The previous prime is 26993. The next prime is 27011. The reversal of 26998 is 89962.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6748 + ... + 6751.

It is an arithmetic number, because the mean of its divisors is an integer number (10125).

2²⁶⁹⁹⁸ is an apocalyptic number.

26998 is a deficient number, since it is larger than the sum of its proper divisors (13502).

26998 is a wasteful number, since it uses less digits than its factorization.

26998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13501.

The product of its digits is 7776, while the sum is 34.

The square root of 26998 is about 164.3106813327. The cubic root of 26998 is about 29.9992592410. Note that the first 3 decimals are identical.

It can be divided in two parts, 269 and 98, that multiplied together give a palindrome (26362).

The spelling of 26998 in words is "twenty-six thousand, nine hundred ninety-eight".