266214220 has 24 divisors (see below), whose sum is σ = 591935904. Its totient is φ = 100221696.

The previous prime is 266214209. The next prime is 266214239. The reversal of 266214220 is 22412662.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 391152 + ... + 391831.

It is an arithmetic number, because the mean of its divisors is an integer number (24663996).

Almost surely, 2^266214220 is an apocalyptic number.

266214220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266214220 is an abundant number, since it is smaller than the sum of its proper divisors (325721684).

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

266214220 is a wasteful number, since it uses less digits than its factorization.

266214220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783009 (or 783007 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 266214220 is about 16316.0724440657. The cubic root of 266214220 is about 643.2953566195.

Adding to 266214220 its reverse (22412662), we get a palindrome (288626882).

The spelling of 266214220 in words is "two hundred sixty-six million, two hundred fourteen thousand, two hundred twenty".