266021292 has 48 divisors (see below), whose sum is σ = 662860800. Its totient is φ = 82850880.

The previous prime is 266021251. The next prime is 266021297. The reversal of 266021292 is 292120662.

It is not an unprimeable number, because it can be changed into a prime (266021297) by changing a digit.

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, 1542 + ... + 23117.

It is an arithmetic number, because the mean of its divisors is an integer number (13809600).

Almost surely, 2^266021292 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 266021292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331430400).

266021292 is an abundant number, since it is smaller than the sum of its proper divisors (396839508).

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

266021292 is a wasteful number, since it uses less digits than its factorization.

266021292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24726 (or 24724 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 266021292 is about 16310.1591653791. The cubic root of 266021292 is about 643.1399182914.

The spelling of 266021292 in words is "two hundred sixty-six million, twenty-one thousand, two hundred ninety-two".