Search a number
-
+
24493 = 73499
BaseRepresentation
bin101111110101101
31020121011
411332231
51240433
6305221
7131260
oct57655
936534
1024493
1117447
1212211
13b1c1
148cd7
1573cd
hex5fad

24493 has 4 divisors (see below), whose sum is σ = 28000. Its totient is φ = 20988.

The previous prime is 24481. The next prime is 24499. The reversal of 24493 is 39442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 24493 - 29 = 23981 is a prime.

It is the 157-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24499) by changing a digit.

It is a nontrivial repunit in base 156.

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 in 3 ways as a sum of consecutive naturals, for example, 1743 + ... + 1756.

It is an arithmetic number, because the mean of its divisors is an integer number (7000).

224493 is an apocalyptic number.

It is an amenable number.

24493 is a deficient number, since it is larger than the sum of its proper divisors (3507).

24493 is an equidigital number, since it uses as much as digits as its factorization.

24493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506.

The product of its digits is 864, while the sum is 22.

The square root of 24493 is about 156.5023961478. The cubic root of 24493 is about 29.0411623159.

The spelling of 24493 in words is "twenty-four thousand, four hundred ninety-three".

Divisors: 1 7 3499 24493