26530 has 16 divisors (see below), whose sum is σ = 54720. Its totient is φ = 9072.

The previous prime is 26513. The next prime is 26539. The reversal of 26530 is 3562.

It is an Ulam number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (26539) by changing a digit.

26530 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, 120 + ... + 259.

It is an arithmetic number, because the mean of its divisors is an integer number (3420).

2²⁶⁵³⁰ is an apocalyptic number.

26530 is an abundant number, since it is smaller than the sum of its proper divisors (28190).

It is a weird number, because it is abundant, but not a pseudoperfect number.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27360).

26530 is a wasteful number, since it uses less digits than its factorization.

26530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 26530 is about 162.8803241647. The cubic root of 26530 is about 29.8249059836.

The spelling of 26530 in words is "twenty-six thousand, five hundred thirty".