26087280 has 80 divisors (see below), whose sum is σ = 82033440. Its totient is φ = 6856704.

The previous prime is 26087261. The next prime is 26087287. The reversal of 26087280 is 8278062.

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 (26087287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16776 + ... + 18264.

It is an arithmetic number, because the mean of its divisors is an integer number (1025418).

Almost surely, 2^26087280 is an apocalyptic number.

26087280 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 26087280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41016720).

26087280 is an abundant number, since it is smaller than the sum of its proper divisors (55946160).

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

26087280 is a wasteful number, since it uses less digits than its factorization.

26087280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 26087280 is about 5107.5708511973. The cubic root of 26087280 is about 296.5807323097.

The spelling of 26087280 in words is "twenty-six million, eighty-seven thousand, two hundred eighty".