26656520 has 64 divisors (see below), whose sum is σ = 66873600. Its totient is φ = 9479680.

The previous prime is 26656507. The next prime is 26656523. The reversal of 26656520 is 2565662.

It is not an unprimeable number, because it can be changed into a prime (26656523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20036 + ... + 21324.

It is an arithmetic number, because the mean of its divisors is an integer number (1044900).

Almost surely, 2^26656520 is an apocalyptic number.

26656520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26656520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33436800).

26656520 is an abundant number, since it is smaller than the sum of its proper divisors (40217080).

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

26656520 is a wasteful number, since it uses less digits than its factorization.

26656520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 26656520 is about 5162.9952546947. The cubic root of 26656520 is about 298.7224188633.

The spelling of 26656520 in words is "twenty-six million, six hundred fifty-six thousand, five hundred twenty".