26780256 has 36 divisors (see below), whose sum is σ = 76157172. Its totient is φ = 8926656.

The previous prime is 26780239. The next prime is 26780263. The reversal of 26780256 is 65208762.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×26780256² = 1434364222851072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 26780256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46206 + ... + 46781.

It is an arithmetic number, because the mean of its divisors is an integer number (2115477).

Almost surely, 2^26780256 is an apocalyptic number.

It is an amenable number.

26780256 is an abundant number, since it is smaller than the sum of its proper divisors (49376916).

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

26780256 is a wasteful number, since it uses less digits than its factorization.

26780256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93003 (or 92992 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 26780256 is about 5174.9643477033. The cubic root of 26780256 is about 299.1839153659.

The spelling of 26780256 in words is "twenty-six million, seven hundred eighty thousand, two hundred fifty-six".