266842536 has 64 divisors (see below), whose sum is σ = 704596800. Its totient is φ = 84214080.

The previous prime is 266842529. The next prime is 266842549. The reversal of 266842536 is 635248662.

It is a happy number.

It is a super-2 number, since 2×266842536² = 142409878037822592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163806 + ... + 165426.

It is an arithmetic number, because the mean of its divisors is an integer number (11009325).

Almost surely, 2^266842536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266842536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352298400).

266842536 is an abundant number, since it is smaller than the sum of its proper divisors (437754264).

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

266842536 is a wasteful number, since it uses less digits than its factorization.

266842536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1645 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 266842536 is about 16335.3156076031. The cubic root of 266842536 is about 643.8010586203.

The spelling of 266842536 in words is "two hundred sixty-six million, eight hundred forty-two thousand, five hundred thirty-six".