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26556 = 2232213

26556 has 12 divisors (see below), whose sum is σ = 61992. Its totient is φ = 8848.

The previous prime is 26539. The next prime is 26557. The reversal of 26556 is 65562.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×265562 = 1410442272, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 26556.

It is not an unprimeable number, because it can be changed into a prime (26557) 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, 1095 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (5166).

226556 is an apocalyptic number.

It is an amenable number.

26556 is an abundant number, since it is smaller than the sum of its proper divisors (35436).

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 (30996).

26556 is a wasteful number, since it uses less digits than its factorization.

26556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2218 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 26556 is about 162.9601178203. The cubic root of 26556 is about 29.8346458300.

The spelling of 26556 in words is "twenty-six thousand, five hundred fifty-six".

Divisors: 1 2 3 4 6 12 2213 4426 6639 8852 13278 26556