266228580 has 48 divisors (see below), whose sum is σ = 763628544. Its totient is φ = 69262080.

The previous prime is 266228531. The next prime is 266228623. The reversal of 266228580 is 85822662.

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 15 ways as a sum of consecutive naturals, for example, 51652 + ... + 56571.

It is an arithmetic number, because the mean of its divisors is an integer number (15908928).

Almost surely, 2^266228580 is an apocalyptic number.

266228580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266228580 is an abundant number, since it is smaller than the sum of its proper divisors (497399964).

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

266228580 is a wasteful number, since it uses less digits than its factorization.

266228580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108276 (or 108274 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 266228580 is about 16316.5124950156. The cubic root of 266228580 is about 643.3069231882.

The spelling of 266228580 in words is "two hundred sixty-six million, two hundred twenty-eight thousand, five hundred eighty".