26780480 has 28 divisors (see below), whose sum is σ = 63771780. Its totient is φ = 10712064.

The previous prime is 26780449. The next prime is 26780483. The reversal of 26780480 is 8408762.

It can be written as a sum of positive squares in 2 ways, for example, as 16386304 + 10394176 = 4048^2 + 3224^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26780480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26780483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41525 + ... + 42164.

Almost surely, 2^26780480 is an apocalyptic number.

26780480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26780480 is an abundant number, since it is smaller than the sum of its proper divisors (36991300).

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

26780480 is an equidigital number, since it uses as much as digits as its factorization.

26780480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83706 (or 83696 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 26780480 is about 5174.9859903192. The cubic root of 26780480 is about 299.1847495253.

The spelling of 26780480 in words is "twenty-six million, seven hundred eighty thousand, four hundred eighty".