266158950 has 48 divisors (see below), whose sum is σ = 667524240. Its totient is φ = 70174720.

The previous prime is 266158931. The next prime is 266158961. The reversal of 266158950 is 59851662.

It is a Curzon number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 3382 + ... + 23318.

It is an arithmetic number, because the mean of its divisors is an integer number (13906755).

Almost surely, 2^266158950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266158950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333762120).

266158950 is an abundant number, since it is smaller than the sum of its proper divisors (401365290).

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

266158950 is a wasteful number, since it uses less digits than its factorization.

266158950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20041 (or 20036 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 266158950 is about 16314.3786274562. The cubic root of 266158950 is about 643.2508343356.

The spelling of 266158950 in words is "two hundred sixty-six million, one hundred fifty-eight thousand, nine hundred fifty".