26566220 has 12 divisors (see below), whose sum is σ = 55789104. Its totient is φ = 10626480.

The previous prime is 26566207. The next prime is 26566271. The reversal of 26566220 is 2266562.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 664136 + ... + 664175.

It is an arithmetic number, because the mean of its divisors is an integer number (4649092).

Almost surely, 2^26566220 is an apocalyptic number.

26566220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26566220 is an abundant number, since it is smaller than the sum of its proper divisors (29222884).

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

26566220 is a wasteful number, since it uses less digits than its factorization.

26566220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328320 (or 1328318 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 26566220 is about 5154.2429123975. The cubic root of 26566220 is about 298.3847259826.

The spelling of 26566220 in words is "twenty-six million, five hundred sixty-six thousand, two hundred twenty".