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12263881 = 76779331
BaseRepresentation
bin101110110010…
…000111001001
3212002001212211
4232302013021
511114421011
61114505121
7206145520
oct56620711
925061784
1012263881
116a17043
1241351a1
132705146
1418b34b7
151123b21
hexbb21c9

12263881 has 16 divisors (see below), whose sum is σ = 14448640. Its totient is φ = 10193040.

The previous prime is 12263869. The next prime is 12263891. The reversal of 12263881 is 18836221.

12263881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12263881 - 27 = 12263753 is a prime.

It is a super-2 number, since 2×122638812 = 300805554364322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12263861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36886 + ... + 37216.

It is an arithmetic number, because the mean of its divisors is an integer number (903040).

Almost surely, 212263881 is an apocalyptic number.

It is an amenable number.

12263881 is a deficient number, since it is larger than the sum of its proper divisors (2184759).

12263881 is an equidigital number, since it uses as much as digits as its factorization.

12263881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

The product of its digits is 4608, while the sum is 31.

The square root of 12263881 is about 3501.9824385625. The cubic root of 12263881 is about 230.6088531180.

The spelling of 12263881 in words is "twelve million, two hundred sixty-three thousand, eight hundred eighty-one".

Divisors: 1 7 67 79 331 469 553 2317 5293 22177 26149 37051 155239 183043 1751983 12263881