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10869 = 33623
BaseRepresentation
bin10101001110101
3112220120
42221311
5321434
6122153
743455
oct25165
915816
1010869
118191
126359
134c41
143d65
153349
hex2a75

10869 has 4 divisors (see below), whose sum is σ = 14496. Its totient is φ = 7244.

The previous prime is 10867. The next prime is 10883. The reversal of 10869 is 96801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10869 - 21 = 10867 is a prime.

It is a super-2 number, since 2×108692 = 236270322, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1809 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (3624).

210869 is an apocalyptic number.

It is an amenable number.

10869 is a deficient number, since it is larger than the sum of its proper divisors (3627).

10869 is an equidigital number, since it uses as much as digits as its factorization.

10869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 10869 is about 104.2544963059. The cubic root of 10869 is about 22.1511628324.

The spelling of 10869 in words is "ten thousand, eight hundred sixty-nine".

Divisors: 1 3 3623 10869