266686248 has 32 divisors (see below), whose sum is σ = 679298400. Its totient is φ = 87217728.

The previous prime is 266686243. The next prime is 266686279. The reversal of 266686248 is 842686662.

It is a super-2 number, since 2×266686248² = 142243109744635008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 266686197 and 266686206.

It is not an unprimeable number, because it can be changed into a prime (266686243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103558 + ... + 106101.

It is an arithmetic number, because the mean of its divisors is an integer number (21228075).

Almost surely, 2^266686248 is an apocalyptic number.

It is an amenable number.

266686248 is an abundant number, since it is smaller than the sum of its proper divisors (412612152).

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

266686248 is a wasteful number, since it uses less digits than its factorization.

266686248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209721 (or 209717 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The square root of 266686248 is about 16330.5311609880. The cubic root of 266686248 is about 643.6753439927.

The spelling of 266686248 in words is "two hundred sixty-six million, six hundred eighty-six thousand, two hundred forty-eight".