26864080 has 40 divisors (see below), whose sum is σ = 66136392. Its totient is φ = 10113024.

The previous prime is 26864077. The next prime is 26864093. The reversal of 26864080 is 8046862.

It can be written as a sum of positive squares in 4 ways, for example, as 3283344 + 23580736 = 1812^2 + 4856^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 8517 + ... + 11236.

Almost surely, 2^26864080 is an apocalyptic number.

26864080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26864080 is an abundant number, since it is smaller than the sum of its proper divisors (39272312).

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

26864080 is a wasteful number, since it uses less digits than its factorization.

26864080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19783 (or 19777 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 26864080 is about 5183.0570129992. The cubic root of 26864080 is about 299.4957454921.

The spelling of 26864080 in words is "twenty-six million, eight hundred sixty-four thousand, eighty".