266220236 has 12 divisors (see below), whose sum is σ = 467104512. Its totient is φ = 132761808.

The previous prime is 266220233. The next prime is 266220277. The reversal of 266220236 is 632022662.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 266220199 and 266220208.

It is not an unprimeable number, because it can be changed into a prime (266220233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85355 + ... + 88418.

It is an arithmetic number, because the mean of its divisors is an integer number (38925376).

Almost surely, 2^266220236 is an apocalyptic number.

It is an amenable number.

266220236 is a deficient number, since it is larger than the sum of its proper divisors (200884276).

266220236 is a wasteful number, since it uses less digits than its factorization.

266220236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174160 (or 174158 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 266220236 is about 16316.2568011171. The cubic root of 266220236 is about 643.3002023858.

Adding to 266220236 its reverse (632022662), we get a palindrome (898242898).

The spelling of 266220236 in words is "two hundred sixty-six million, two hundred twenty thousand, two hundred thirty-six".