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24945 = 351663
BaseRepresentation
bin110000101110001
31021012220
412011301
51244240
6311253
7132504
oct60561
937186
1024945
1117818
1212529
13b47b
14913b
1575d0
hex6171

24945 has 8 divisors (see below), whose sum is σ = 39936. Its totient is φ = 13296.

The previous prime is 24943. The next prime is 24953. The reversal of 24945 is 54942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24945 - 21 = 24943 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (24943) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817 + ... + 846.

It is an arithmetic number, because the mean of its divisors is an integer number (4992).

224945 is an apocalyptic number.

It is an amenable number.

24945 is a deficient number, since it is larger than the sum of its proper divisors (14991).

24945 is a wasteful number, since it uses less digits than its factorization.

24945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671.

The product of its digits is 1440, while the sum is 24.

The square root of 24945 is about 157.9398619728. The cubic root of 24945 is about 29.2187188414.

It can be divided in two parts, 24 and 945, that added together give a palindrome (969).

The spelling of 24945 in words is "twenty-four thousand, nine hundred forty-five".

Divisors: 1 3 5 15 1663 4989 8315 24945