26565220 has 48 divisors (see below), whose sum is σ = 64447488. Its totient is φ = 9090560.

The previous prime is 26565197. The next prime is 26565221. The reversal of 26565220 is 2256562.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (26565221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (1342656).

Almost surely, 2^26565220 is an apocalyptic number.

26565220 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 26565220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32223744).

26565220 is an abundant number, since it is smaller than the sum of its proper divisors (37882268).

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

26565220 is a wasteful number, since it uses less digits than its factorization.

26565220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140 (or 7138 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 26565220 is about 5154.1459040272. The cubic root of 26565220 is about 298.3809820241.

The spelling of 26565220 in words is "twenty-six million, five hundred sixty-five thousand, two hundred twenty".