Search a number
-
+
23086881 = 3219791709
BaseRepresentation
bin101100000010…
…0011100100001
31121102221020200
41120010130201
521402240011
62142455413
7400143456
oct130043441
947387220
1023086881
1112039574
127894569
134a2449c
1430cd82d
152060856
hex1604721

23086881 has 24 divisors (see below), whose sum is σ = 35568000. Its totient is φ = 14388192.

The previous prime is 23086879. The next prime is 23086891. The reversal of 23086881 is 18868032.

It is not a de Polignac number, because 23086881 - 21 = 23086879 is a prime.

It is a super-2 number, since 2×230868812 = 1066008148616322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23086801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12655 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (1482000).

Almost surely, 223086881 is an apocalyptic number.

It is an amenable number.

23086881 is a deficient number, since it is larger than the sum of its proper divisors (12481119).

23086881 is a wasteful number, since it uses less digits than its factorization.

23086881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 23086881 is about 4804.8809558614. The cubic root of 23086881 is about 284.7443321175.

The spelling of 23086881 in words is "twenty-three million, eighty-six thousand, eight hundred eighty-one".

Divisors: 1 3 9 19 57 79 171 237 711 1501 1709 4503 5127 13509 15381 32471 97413 135011 292239 405033 1215099 2565209 7695627 23086881