266042880 has 200 divisors, whose sum is σ = 953624232. Its totient is φ = 70889472.

The previous prime is 266042831. The next prime is 266042929. The reversal of 266042880 is 88240662.

266042880 is a `hidden beast` number, since 26 + 604 + 28 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (266042831) and next prime (266042929).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 206719 + ... + 208001.

Almost surely, 2^266042880 is an apocalyptic number.

266042880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476812116).

266042880 is an abundant number, since it is smaller than the sum of its proper divisors (687581352).

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

266042880 is an equidigital number, since it uses as much as digits as its factorization.

266042880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 266042880 is about 16310.8209480700. The cubic root of 266042880 is about 643.1573150555.

The spelling of 266042880 in words is "two hundred sixty-six million, forty-two thousand, eight hundred eighty".