26720256 has 48 divisors (see below), whose sum is σ = 71253000. Its totient is φ = 8904704.

The previous prime is 26720237. The next prime is 26720303. The reversal of 26720256 is 65202762.

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

It is a congruent number.

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, 3970 + ... + 8318.

Almost surely, 2^26720256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26720256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35626500).

26720256 is an abundant number, since it is smaller than the sum of its proper divisors (44532744).

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

26720256 is an equidigital number, since it uses as much as digits as its factorization.

26720256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4354 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 26720256 is about 5169.1639556122. The cubic root of 26720256 is about 298.9603121038.

The spelling of 26720256 in words is "twenty-six million, seven hundred twenty thousand, two hundred fifty-six".