26698880 has 64 divisors (see below), whose sum is σ = 68758200. Its totient is φ = 9854976.

The previous prime is 26698871. The next prime is 26698921. The reversal of 26698880 is 8889662.

It can be written as a sum of positive squares in 4 ways, for example, as 17505856 + 9193024 = 4184^2 + 3032^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6716 + ... + 9924.

Almost surely, 2^26698880 is an apocalyptic number.

26698880 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 26698880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34379100).

26698880 is an abundant number, since it is smaller than the sum of its proper divisors (42059320).

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

26698880 is a wasteful number, since it uses less digits than its factorization.

26698880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3229 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 26698880 is about 5167.0958961490. The cubic root of 26698880 is about 298.8805688492.

The spelling of 26698880 in words is "twenty-six million, six hundred ninety-eight thousand, eight hundred eighty".