26864440 has 32 divisors (see below), whose sum is σ = 62532000. Its totient is φ = 10374784.

The previous prime is 26864429. The next prime is 26864459. The reversal of 26864440 is 4446862.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26864396 and 26864405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10420 + ... + 12739.

It is an arithmetic number, because the mean of its divisors is an integer number (1954125).

Almost surely, 2^26864440 is an apocalyptic number.

26864440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26864440 is an abundant number, since it is smaller than the sum of its proper divisors (35667560).

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

26864440 is a wasteful number, since it uses less digits than its factorization.

26864440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23199 (or 23195 counting only the distinct ones).

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

The square root of 26864440 is about 5183.0917414223. The cubic root of 26864440 is about 299.4970833131.

The spelling of 26864440 in words is "twenty-six million, eight hundred sixty-four thousand, four hundred forty".