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24969145 = 523297487
BaseRepresentation
bin101111100111…
…1111110111001
31201222120020011
41133033332321
522343003040
62251101521
7422143225
oct137177671
951876204
1024969145
1113104763
1284418a1
135233156
14345d785
1522d33ea
hex17cffb9

24969145 has 16 divisors (see below), whose sum is σ = 32348160. Its totient is φ = 18445504.

The previous prime is 24969137. The next prime is 24969163. The reversal of 24969145 is 54196942.

It is a cyclic number.

It is not a de Polignac number, because 24969145 - 23 = 24969137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24969098 and 24969107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (2021760).

Almost surely, 224969145 is an apocalyptic number.

It is an amenable number.

24969145 is a deficient number, since it is larger than the sum of its proper divisors (7379015).

24969145 is a wasteful number, since it uses less digits than its factorization.

24969145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7544.

The product of its digits is 77760, while the sum is 40.

The square root of 24969145 is about 4996.9135473810. The cubic root of 24969145 is about 292.2814302086.

The spelling of 24969145 in words is "twenty-four million, nine hundred sixty-nine thousand, one hundred forty-five".

Divisors: 1 5 23 29 115 145 667 3335 7487 37435 172201 217123 861005 1085615 4993829 24969145