266400208 has 20 divisors (see below), whose sum is σ = 516590820. Its totient is φ = 133086464.

The previous prime is 266400193. The next prime is 266400209. The reversal of 266400208 is 802004662.

It can be written as a sum of positive squares in 2 ways, for example, as 183006784 + 83393424 = 13528^2 + 9132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266400209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14166 + ... + 27082.

It is an arithmetic number, because the mean of its divisors is an integer number (25829541).

Almost surely, 2^266400208 is an apocalyptic number.

It is an amenable number.

266400208 is a deficient number, since it is larger than the sum of its proper divisors (250190612).

266400208 is a wasteful number, since it uses less digits than its factorization.

266400208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14214 (or 14208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 266400208 is about 16321.7709823413. The cubic root of 266400208 is about 643.4451324461.

The spelling of 266400208 in words is "two hundred sixty-six million, four hundred thousand, two hundred eight".