26855580 has 96 divisors (see below), whose sum is σ = 80668224. Its totient is φ = 6651904.

The previous prime is 26855573. The next prime is 26855581. The reversal of 26855580 is 8555862.

It is a super-3 number, since 3×26855580³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26855581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115144 + ... + 115376.

It is an arithmetic number, because the mean of its divisors is an integer number (840294).

Almost surely, 2^26855580 is an apocalyptic number.

26855580 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 26855580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40334112).

26855580 is an abundant number, since it is smaller than the sum of its proper divisors (53812644).

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

26855580 is a wasteful number, since it uses less digits than its factorization.

26855580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 26855580 is about 5182.2369687231. The cubic root of 26855580 is about 299.4641545799.

The spelling of 26855580 in words is "twenty-six million, eight hundred fifty-five thousand, five hundred eighty".