26684880 has 40 divisors (see below), whose sum is σ = 82723872. Its totient is φ = 7115904.

The previous prime is 26684869. The next prime is 26684909. The reversal of 26684880 is 8848662.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26684880² = 1424165641228800, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 55354 + ... + 55833.

Almost surely, 2^26684880 is an apocalyptic number.

26684880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26684880 is an abundant number, since it is smaller than the sum of its proper divisors (56038992).

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

26684880 is a wasteful number, since it uses less digits than its factorization.

26684880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111203 (or 111197 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 26684880 is about 5165.7409923456. The cubic root of 26684880 is about 298.8283187230.

The spelling of 26684880 in words is "twenty-six million, six hundred eighty-four thousand, eight hundred eighty".