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23808265 = 5131572333
BaseRepresentation
bin101101011010…
…0100100001001
31122210120210121
41122310210021
522043331030
62210143241
7406236565
oct132644411
948716717
1023808265
1112491558
127b81b21
134c17940
14323a6a5
15215447a
hex16b4909

23808265 has 16 divisors (see below), whose sum is σ = 30976848. Its totient is φ = 17462016.

The previous prime is 23808259. The next prime is 23808277. The reversal of 23808265 is 56280832.

It can be written as a sum of positive squares in 8 ways, for example, as 4562496 + 19245769 = 2136^2 + 4387^2 .

It is not a de Polignac number, because 23808265 - 211 = 23806217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23808265.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9039 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (1936053).

Almost surely, 223808265 is an apocalyptic number.

It is an amenable number.

23808265 is a deficient number, since it is larger than the sum of its proper divisors (7168583).

23808265 is a wasteful number, since it uses less digits than its factorization.

23808265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 23808265 is about 4879.3713734456. The cubic root of 23808265 is about 287.6797212781.

The spelling of 23808265 in words is "twenty-three million, eight hundred eight thousand, two hundred sixty-five".

Divisors: 1 5 13 65 157 785 2041 2333 10205 11665 30329 151645 366281 1831405 4761653 23808265