266400026 has 16 divisors (see below), whose sum is σ = 423951360. Its totient is φ = 125193600.

The previous prime is 266399999. The next prime is 266400031. The reversal of 266400026 is 620004662.

266400026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266399968 and 266400004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22775 + ... + 32426.

It is an arithmetic number, because the mean of its divisors is an integer number (26496960).

Almost surely, 2^266400026 is an apocalyptic number.

266400026 is a deficient number, since it is larger than the sum of its proper divisors (157551334).

266400026 is a wasteful number, since it uses less digits than its factorization.

266400026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55349.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 266400026 is about 16321.7654069650. The cubic root of 266400026 is about 643.4449859159. Note that the first 3 decimals are identical.

Adding to 266400026 its reverse (620004662), we get a palindrome (886404688).

The spelling of 266400026 in words is "two hundred sixty-six million, four hundred thousand, twenty-six".