26206380 has 144 divisors (see below), whose sum is σ = 84206304. Its totient is φ = 6589440.

The previous prime is 26206379. The next prime is 26206391. The reversal of 26206380 is 8360262.

26206380 is a `hidden beast` number, since 2 + 6 + 20 + 638 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 391107 + ... + 391173.

It is an arithmetic number, because the mean of its divisors is an integer number (584766).

Almost surely, 2^26206380 is an apocalyptic number.

26206380 is a gapful number since it is divisible by the number (20) 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 26206380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42103152).

26206380 is an abundant number, since it is smaller than the sum of its proper divisors (57999924).

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

26206380 is a wasteful number, since it uses less digits than its factorization.

26206380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 26206380 is about 5119.2167369628. The cubic root of 26206380 is about 297.0313880373.

The spelling of 26206380 in words is "twenty-six million, two hundred six thousand, three hundred eighty".