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23235641 = 1113229431
BaseRepresentation
bin101100010100…
…0110000111001
31121201111022022
41120220300321
521422020031
62150004225
7401333252
oct130506071
947644268
1023235641
1112130310
127946675
134a77100
14312bb29
15208e97b
hex1628c39

23235641 has 24 divisors (see below), whose sum is σ = 28460160. Its totient is φ = 18782400.

The previous prime is 23235637. The next prime is 23235659. The reversal of 23235641 is 14653232.

It is not a de Polignac number, because 23235641 - 22 = 23235637 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 23235641.

It is not an unprimeable number, because it can be changed into a prime (23235631) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 53696 + ... + 54126.

It is an arithmetic number, because the mean of its divisors is an integer number (1185840).

Almost surely, 223235641 is an apocalyptic number.

It is an amenable number.

23235641 is a deficient number, since it is larger than the sum of its proper divisors (5224519).

23235641 is a wasteful number, since it uses less digits than its factorization.

23235641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 484 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 23235641 is about 4820.3361915949. The cubic root of 23235641 is about 285.3546052878.

Adding to 23235641 its reverse (14653232), we get a palindrome (37888873).

The spelling of 23235641 in words is "twenty-three million, two hundred thirty-five thousand, six hundred forty-one".

Divisors: 1 11 13 29 143 169 319 377 431 1859 4147 4741 4901 5603 12499 53911 61633 72839 137489 162487 801229 1787357 2112331 23235641