266223250 has 64 divisors (see below), whose sum is σ = 537788160. Its totient is φ = 98352000.

The previous prime is 266223203. The next prime is 266223253. The reversal of 266223250 is 52322662.

It is not an unprimeable number, because it can be changed into a prime (266223253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194067 + ... + 195433.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^266223250 is an apocalyptic number.

266223250 is an abundant number, since it is smaller than the sum of its proper divisors (271564910).

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

266223250 is a wasteful number, since it uses less digits than its factorization.

266223250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 266223250 is about 16316.3491627263. The cubic root of 266223250 is about 643.3026300744.

The spelling of 266223250 in words is "two hundred sixty-six million, two hundred twenty-three thousand, two hundred fifty".