26480640 has 104 divisors (see below), whose sum is σ = 84924288. Its totient is φ = 7045120.

The previous prime is 26480639. The next prime is 26480651. The reversal of 26480640 is 4608462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 26480598 and 26480607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61225 + ... + 61655.

Almost surely, 2^26480640 is an apocalyptic number.

26480640 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 26480640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42462144).

26480640 is an abundant number, since it is smaller than the sum of its proper divisors (58443648).

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

26480640 is an equidigital number, since it uses as much as digits as its factorization.

26480640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 26480640 is about 5145.9343174976. The cubic root of 26480640 is about 298.0639773753.

The spelling of 26480640 in words is "twenty-six million, four hundred eighty thousand, six hundred forty".