26490256 has 40 divisors (see below), whose sum is σ = 58190720. Its totient is φ = 11581056.

The previous prime is 26490241. The next prime is 26490257. The reversal of 26490256 is 65209462.

It is not an unprimeable number, because it can be changed into a prime (26490257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (1454768).

Almost surely, 2^26490256 is an apocalyptic number.

26490256 is a gapful number since it is divisible by the number (26) 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 26490256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29095360).

26490256 is an abundant number, since it is smaller than the sum of its proper divisors (31700464).

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

26490256 is a wasteful number, since it uses less digits than its factorization.

26490256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743 (or 6737 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 26490256 is about 5146.8685625339. The cubic root of 26490256 is about 298.1000519860.

The spelling of 26490256 in words is "twenty-six million, four hundred ninety thousand, two hundred fifty-six".