266268440 has 16 divisors (see below), whose sum is σ = 599104080. Its totient is φ = 106507360.

The previous prime is 266268437. The next prime is 266268461. The reversal of 266268440 is 44862662.

It is a junction number, because it is equal to n+sod(n) for n = 266268394 and 266268403.

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 3 ways as a sum of consecutive naturals, for example, 3328316 + ... + 3328395.

It is an arithmetic number, because the mean of its divisors is an integer number (37444005).

Almost surely, 2^266268440 is an apocalyptic number.

266268440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266268440 is an abundant number, since it is smaller than the sum of its proper divisors (332835640).

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

266268440 is a wasteful number, since it uses less digits than its factorization.

266268440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656722 (or 6656718 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 266268440 is about 16317.7339113003. The cubic root of 266268440 is about 643.3390270972.

The spelling of 266268440 in words is "two hundred sixty-six million, two hundred sixty-eight thousand, four hundred forty".