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21196 = 227757
BaseRepresentation
bin101001011001100
31002002001
411023030
51134241
6242044
7115540
oct51314
932061
1021196
1114a1a
1210324
139856
147a20
156431
hex52cc

21196 has 12 divisors (see below), whose sum is σ = 42448. Its totient is φ = 9072.

The previous prime is 21193. The next prime is 21211. The reversal of 21196 is 69112.

21196 is nontrivially palindromic in base 3.

21196 is an admirable number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (21191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351 + ... + 406.

221196 is an apocalyptic number.

It is an amenable number.

21196 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21224).

21196 is a wasteful number, since it uses less digits than its factorization.

21196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 766 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

The square root of 21196 is about 145.5884610812. The cubic root of 21196 is about 27.6748092999.

The spelling of 21196 in words is "twenty-one thousand, one hundred ninety-six".

Divisors: 1 2 4 7 14 28 757 1514 3028 5299 10598 21196