266321152 has 54 divisors (see below), whose sum is σ = 551010278. Its totient is φ = 128464896.

The previous prime is 266321149. The next prime is 266321161. The reversal of 266321152 is 251123662.

It can be written as a sum of positive squares in 3 ways, for example, as 72999936 + 193321216 = 8544^2 + 13904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266321152.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 214678 + ... + 215914.

Almost surely, 2^266321152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266321152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275505139).

266321152 is an abundant number, since it is smaller than the sum of its proper divisors (284689126).

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

266321152 is an equidigital number, since it uses as much as digits as its factorization.

266321152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1268 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 266321152 is about 16319.3490066240. The cubic root of 266321152 is about 643.3814773018.

The spelling of 266321152 in words is "two hundred sixty-six million, three hundred twenty-one thousand, one hundred fifty-two".