26540080 has 80 divisors (see below), whose sum is σ = 71495424. Its totient is φ = 8974080.

The previous prime is 26540071. The next prime is 26540081. The reversal of 26540080 is 8004562.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46195 + ... + 46765.

Almost surely, 2^26540080 is an apocalyptic number.

26540080 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 26540080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35747712).

26540080 is an abundant number, since it is smaller than the sum of its proper divisors (44955344).

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

26540080 is a wasteful number, since it uses less digits than its factorization.

26540080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 26540080 is about 5151.7065133798. The cubic root of 26540080 is about 298.2868280210.

The spelling of 26540080 in words is "twenty-six million, five hundred forty thousand, eighty".