26826720 has 48 divisors (see below), whose sum is σ = 84505680. Its totient is φ = 7153664.

The previous prime is 26826691. The next prime is 26826721. The reversal of 26826720 is 2762862.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26826721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27465 + ... + 28424.

It is an arithmetic number, because the mean of its divisors is an integer number (1760535).

Almost surely, 2^26826720 is an apocalyptic number.

26826720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26826720 is an abundant number, since it is smaller than the sum of its proper divisors (57678960).

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

26826720 is a wasteful number, since it uses less digits than its factorization.

26826720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55907 (or 55899 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 26826720 is about 5179.4517084340. The cubic root of 26826720 is about 299.3568443770.

The spelling of 26826720 in words is "twenty-six million, eight hundred twenty-six thousand, seven hundred twenty".