23678 has 4 divisors (see below), whose sum is σ = 35520. Its totient is φ = 11838.

The previous prime is 23677. The next prime is 23687. The reversal of 23678 is 87632.

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

It is an Ulam number.

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

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5918 + ... + 5921.

It is an arithmetic number, because the mean of its divisors is an integer number (8880).

2²³⁶⁷⁸ is an apocalyptic number.

23678 is a deficient number, since it is larger than the sum of its proper divisors (11842).

23678 is a wasteful number, since it uses less digits than its factorization.

23678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11841.

The product of its digits is 2016, while the sum is 26.

The square root of 23678 is about 153.8765739156. The cubic root of 23678 is about 28.7154089334.

The spelling of 23678 in words is "twenty-three thousand, six hundred seventy-eight".