266730408 has 192 divisors, whose sum is σ = 907320960. Its totient is φ = 71663616.

The previous prime is 266730403. The next prime is 266730427. The reversal of 266730408 is 804037662.

It is a super-2 number, since 2×266730408² = 142290221103692928, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (266730403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230760 + ... + 231912.

It is an arithmetic number, because the mean of its divisors is an integer number (4725630).

Almost surely, 2^266730408 is an apocalyptic number.

266730408 is a gapful number since it is divisible by the number (28) 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 266730408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453660480).

266730408 is an abundant number, since it is smaller than the sum of its proper divisors (640590552).

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

266730408 is a wasteful number, since it uses less digits than its factorization.

266730408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 266730408 is about 16331.8831737188. The cubic root of 266730408 is about 643.7108703020.

The spelling of 266730408 in words is "two hundred sixty-six million, seven hundred thirty thousand, four hundred eight".