26220880 has 60 divisors (see below), whose sum is σ = 70927380. Its totient is φ = 8988672.

The previous prime is 26220847. The next prime is 26220881. The reversal of 26220880 is 8802262.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16032016 + 10188864 = 4004^2 + 3192^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26220881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 576 + ... + 7264.

It is an arithmetic number, because the mean of its divisors is an integer number (1182123).

Almost surely, 2^26220880 is an apocalyptic number.

26220880 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 26220880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35463690).

26220880 is an abundant number, since it is smaller than the sum of its proper divisors (44706500).

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

26220880 is a wasteful number, since it uses less digits than its factorization.

26220880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6703 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 26220880 is about 5120.6327733982. The cubic root of 26220880 is about 297.0861604633.

The spelling of 26220880 in words is "twenty-six million, two hundred twenty thousand, eight hundred eighty".