266226440 has 16 divisors (see below), whose sum is σ = 599009580. Its totient is φ = 106490560.

The previous prime is 266226437. The next prime is 266226451. The reversal of 266226440 is 44622662.

266226440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 253510084 + 12716356 = 15922^2 + 3566^2 .

It is a junction number, because it is equal to n+sod(n) for n = 266226397 and 266226406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3327791 + ... + 3327870.

Almost surely, 2^266226440 is an apocalyptic number.

266226440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266226440 is an abundant number, since it is smaller than the sum of its proper divisors (332783140).

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

266226440 is a wasteful number, since it uses less digits than its factorization.

266226440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655672 (or 6655668 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 266226440 is about 16316.4469171447. The cubic root of 266226440 is about 643.3051995059.

The spelling of 266226440 in words is "two hundred sixty-six million, two hundred twenty-six thousand, four hundred forty".