26448640 has 36 divisors (see below), whose sum is σ = 63355824. Its totient is φ = 10578944.

The previous prime is 26448601. The next prime is 26448659. The reversal of 26448640 is 4684462.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26448596 and 26448605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9052 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (1759884).

Almost surely, 2^26448640 is an apocalyptic number.

26448640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26448640 is an abundant number, since it is smaller than the sum of its proper divisors (36907184).

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

26448640 is an equidigital number, since it uses as much as digits as its factorization.

26448640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20684 (or 20670 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 26448640 is about 5142.8241268781. The cubic root of 26448640 is about 297.9438658287.

The spelling of 26448640 in words is "twenty-six million, four hundred forty-eight thousand, six hundred forty".