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26940 = 2235449
BaseRepresentation
bin110100100111100
31100221210
412210330
51330230
6324420
7141354
oct64474
940853
1026940
1119271
1213710
13c354
149b64
157eb0
hex693c

26940 has 24 divisors (see below), whose sum is σ = 75600. Its totient is φ = 7168.

The previous prime is 26927. The next prime is 26947. The reversal of 26940 is 4962.

26940 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26947) by changing a digit.

26940 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 7 ways as a sum of consecutive naturals, for example, 165 + ... + 284.

It is an arithmetic number, because the mean of its divisors is an integer number (3150).

226940 is an apocalyptic number.

26940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26940 is an abundant number, since it is smaller than the sum of its proper divisors (48660).

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 (37800).

26940 is a wasteful number, since it uses less digits than its factorization.

26940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 26940 is about 164.1340915228. The cubic root of 26940 is about 29.9777612965.

Adding to 26940 its product of nonzero digits (432), we get a palindrome (27372).

The spelling of 26940 in words is "twenty-six thousand, nine hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 449 898 1347 1796 2245 2694 4490 5388 6735 8980 13470 26940