266913380 has 24 divisors (see below), whose sum is σ = 561411648. Its totient is φ = 106595168.

The previous prime is 266913377. The next prime is 266913389. The reversal of 266913380 is 83319662.

It is not an unprimeable number, because it can be changed into a prime (266913389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627 + ... + 23253.

It is an arithmetic number, because the mean of its divisors is an integer number (23392152).

Almost surely, 2^266913380 is an apocalyptic number.

266913380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266913380 is an abundant number, since it is smaller than the sum of its proper divisors (294498268).

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

266913380 is a wasteful number, since it uses less digits than its factorization.

266913380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283 (or 21281 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 266913380 is about 16337.4838944068. The cubic root of 266913380 is about 643.8580278067.

The spelling of 266913380 in words is "two hundred sixty-six million, nine hundred thirteen thousand, three hundred eighty".