23578 has 4 divisors (see below), whose sum is σ = 35370. Its totient is φ = 11788.

The previous prime is 23567. The next prime is 23581. The reversal of 23578 is 87532.

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., 23409 + 169 = 153^2 + 13^2 .

It is a plaindrome in base 10 and base 12.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5893 + ... + 5896.

2²³⁵⁷⁸ is an apocalyptic number.

23578 is a deficient number, since it is larger than the sum of its proper divisors (11792).

23578 is a wasteful number, since it uses less digits than its factorization.

23578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11791.

The product of its digits is 1680, while the sum is 25.

The square root of 23578 is about 153.5512943612. The cubic root of 23578 is about 28.6749270108.

It can be divided in two parts, 235 and 78, that added together give a palindrome (313).

The spelling of 23578 in words is "twenty-three thousand, five hundred seventy-eight".