Search a number
-
+
23154255 = 355171959
BaseRepresentation
bin101100001010…
…0111001001111
31121120100200000
41120110321033
521411414010
62144135343
7400544055
oct130247117
947510600
1023154255
1112085153
127907553
134a49057
14310a1d5
1520757c0
hex1614e4f

23154255 has 96 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 10824192.

The previous prime is 23154251. The next prime is 23154277. The reversal of 23154255 is 55245132.

It is a happy number.

23154255 is a `hidden beast` number, since 231 + 5 + 425 + 5 = 666.

It is not a de Polignac number, because 23154255 - 22 = 23154251 is a prime.

It is a super-2 number, since 2×231542552 = 1072239049210050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 392416 + ... + 392474.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 223154255 is an apocalyptic number.

23154255 is an abundant number, since it is smaller than the sum of its proper divisors (24020145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23154255 is a wasteful number, since it uses less digits than its factorization.

23154255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 103 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 23154255 is about 4811.8868440561. The cubic root of 23154255 is about 285.0210510766.

Adding to 23154255 its reverse (55245132), we get a palindrome (78399387).

It can be divided in two parts, 23154 and 255, that added together give a square (23409 = 1532).

The spelling of 23154255 in words is "twenty-three million, one hundred fifty-four thousand, two hundred fifty-five".

Divisors: 1 3 5 9 15 17 19 27 45 51 57 59 81 85 95 135 153 171 177 243 255 285 295 323 405 459 513 531 765 855 885 969 1003 1121 1215 1377 1539 1593 1615 2295 2565 2655 2907 3009 3363 4131 4617 4779 4845 5015 5605 6885 7695 7965 8721 9027 10089 14337 14535 15045 16815 19057 20655 23085 23895 26163 27081 30267 43605 45135 50445 57171 71685 78489 81243 90801 95285 130815 135405 151335 171513 243729 272403 285855 392445 406215 454005 514539 857565 1218645 1362015 1543617 2572695 4630851 7718085 23154255