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13278 = 232213
BaseRepresentation
bin11001111011110
3200012210
43033132
5411103
6141250
753466
oct31736
920183
1013278
119a81
127826
136075
144ba6
153e03
hex33de

13278 has 8 divisors (see below), whose sum is σ = 26568. Its totient is φ = 4424.

The previous prime is 13267. The next prime is 13291. The reversal of 13278 is 87231.

It is a sphenic number, since it is the product of 3 distinct primes.

13278 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

13278 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (3321).

213278 is an apocalyptic number.

13278 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 (13284).

13278 is a wasteful number, since it uses less digits than its factorization.

13278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218.

The product of its digits is 336, while the sum is 21.

The square root of 13278 is about 115.2302043737. The cubic root of 13278 is about 23.6797740878.

It can be divided in two parts, 132 and 78, that multiplied together give a triangular number (10296 = T143).

The spelling of 13278 in words is "thirteen thousand, two hundred seventy-eight".

Divisors: 1 2 3 6 2213 4426 6639 13278