266220120 has 64 divisors (see below), whose sum is σ = 800137440. Its totient is φ = 70860800.

The previous prime is 266220107. The next prime is 266220131. The reversal of 266220120 is 21022662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75190 + ... + 78650.

Almost surely, 2^266220120 is an apocalyptic number.

266220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266220120 is an abundant number, since it is smaller than the sum of its proper divisors (533917320).

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

266220120 is a wasteful number, since it uses less digits than its factorization.

266220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116 (or 4112 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 266220120 is about 16316.2532463798. The cubic root of 266220120 is about 643.3001089508.

Adding to 266220120 its reverse (21022662), we get a palindrome (287242782).

The spelling of 266220120 in words is "two hundred sixty-six million, two hundred twenty thousand, one hundred twenty".