24520 has 16 divisors (see below), whose sum is σ = 55260. Its totient is φ = 9792.

The previous prime is 24517. The next prime is 24527. The reversal of 24520 is 2542.

It is a happy number.

24520 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 20164 + 4356 = 142^2 + 66^2 .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 24520.

It is not an unprimeable number, because it can be changed into a prime (24527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267 + ... + 346.

2²⁴⁵²⁰ is an apocalyptic number.

24520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24520 is an abundant number, since it is smaller than the sum of its proper divisors (30740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27630).

24520 is a wasteful number, since it uses less digits than its factorization.

24520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 24520 is about 156.5886330485. The cubic root of 24520 is about 29.0518296281.

It can be divided in two parts, 245 and 20, that multiplied together give a square (4900 = 70²).

The spelling of 24520 in words is "twenty-four thousand, five hundred twenty".