266788080 has 200 divisors, whose sum is σ = 998186112. Its totient is φ = 65650176.

The previous prime is 266788079. The next prime is 266788087. The reversal of 266788080 is 80887662.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266788087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 82657 + ... + 85823.

Almost surely, 2^266788080 is an apocalyptic number.

266788080 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 266788080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499093056).

266788080 is an abundant number, since it is smaller than the sum of its proper divisors (731398032).

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

266788080 is a wasteful number, since it uses less digits than its factorization.

266788080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205 (or 3190 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 266788080 is about 16333.6487044383. The cubic root of 266788080 is about 643.7572609857.

The spelling of 266788080 in words is "two hundred sixty-six million, seven hundred eighty-eight thousand, eighty".