24478 has 4 divisors (see below), whose sum is σ = 36720. Its totient is φ = 12238.

The previous prime is 24473. The next prime is 24481. The reversal of 24478 is 87442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87442 = 2 ⋅43721.

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 (24473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6118 + ... + 6121.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

2²⁴⁴⁷⁸ is an apocalyptic number.

24478 is a deficient number, since it is larger than the sum of its proper divisors (12242).

24478 is a wasteful number, since it uses less digits than its factorization.

24478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241.

The product of its digits is 1792, while the sum is 25.

The square root of 24478 is about 156.4544662194. The cubic root of 24478 is about 29.0352326436.

The spelling of 24478 in words is "twenty-four thousand, four hundred seventy-eight".