26553220 has 24 divisors (see below), whose sum is σ = 55974744. Its totient is φ = 10580736.

The previous prime is 26553211. The next prime is 26553221. The reversal of 26553220 is 2235562.

It can be written as a sum of positive squares in 4 ways, for example, as 3069504 + 23483716 = 1752^2 + 4846^2 .

It is not an unprimeable number, because it can be changed into a prime (26553221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3144 + ... + 7936.

It is an arithmetic number, because the mean of its divisors is an integer number (2332281).

Almost surely, 2^26553220 is an apocalyptic number.

26553220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26553220 is an abundant number, since it is smaller than the sum of its proper divisors (29421524).

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

26553220 is a wasteful number, since it uses less digits than its factorization.

26553220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079 (or 5077 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 26553220 is about 5152.9816611356. The cubic root of 26553220 is about 298.3360471926.

Adding to 26553220 its reverse (2235562), we get a palindrome (28788782).

The spelling of 26553220 in words is "twenty-six million, five hundred fifty-three thousand, two hundred twenty".