266489944 has 16 divisors (see below), whose sum is σ = 571050000. Its totient is φ = 114209952.

The previous prime is 266489939. The next prime is 266489957. The reversal of 266489944 is 449984662.

It is a junction number, because it is equal to n+sod(n) for n = 266489891 and 266489900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2379319 + ... + 2379430.

It is an arithmetic number, because the mean of its divisors is an integer number (35690625).

Almost surely, 2^266489944 is an apocalyptic number.

It is an amenable number.

266489944 is an abundant number, since it is smaller than the sum of its proper divisors (304560056).

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

266489944 is a wasteful number, since it uses less digits than its factorization.

266489944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758762 (or 4758758 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The square root of 266489944 is about 16324.5197172842. The cubic root of 266489944 is about 643.5173717671.

The spelling of 266489944 in words is "two hundred sixty-six million, four hundred eighty-nine thousand, nine hundred forty-four".