266256320 has 56 divisors (see below), whose sum is σ = 691670448. Its totient is φ = 96819200.

The previous prime is 266256317. The next prime is 266256343. The reversal of 266256320 is 23652662.

It is a super-3 number, since 3×266256320³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34301 + ... + 41340.

It is an arithmetic number, because the mean of its divisors is an integer number (12351258).

Almost surely, 2^266256320 is an apocalyptic number.

266256320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266256320 is an abundant number, since it is smaller than the sum of its proper divisors (425414128).

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

266256320 is a wasteful number, since it uses less digits than its factorization.

266256320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75669 (or 75659 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 266256320 is about 16317.3625319780. The cubic root of 266256320 is about 643.3292657860.

The spelling of 266256320 in words is "two hundred sixty-six million, two hundred fifty-six thousand, three hundred twenty".