266290880 has 28 divisors (see below), whose sum is σ = 634105920. Its totient is φ = 106516224.

The previous prime is 266290877. The next prime is 266290883. The reversal of 266290880 is 88092662.

It is an interprime number because it is at equal distance from previous prime (266290877) and next prime (266290883).

It is not an unprimeable number, because it can be changed into a prime (266290883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415760 + ... + 416399.

It is an arithmetic number, because the mean of its divisors is an integer number (22646640).

Almost surely, 2^266290880 is an apocalyptic number.

266290880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266290880 is an abundant number, since it is smaller than the sum of its proper divisors (367815040).

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

266290880 is an equidigital number, since it uses as much as digits as its factorization.

266290880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832176 (or 832166 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 266290880 is about 16318.4214922890. The cubic root of 266290880 is about 643.3570992381.

The spelling of 266290880 in words is "two hundred sixty-six million, two hundred ninety thousand, eight hundred eighty".