266187948 has 96 divisors (see below), whose sum is σ = 727050240. Its totient is φ = 75064320.

The previous prime is 266187941. The next prime is 266187959. The reversal of 266187948 is 849781662.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 266187948.

It is not an unprimeable number, because it can be changed into a prime (266187941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90436 + ... + 93332.

It is an arithmetic number, because the mean of its divisors is an integer number (7573440).

Almost surely, 2^266187948 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 266187948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363525120).

266187948 is an abundant number, since it is smaller than the sum of its proper divisors (460862292).

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

266187948 is a wasteful number, since it uses less digits than its factorization.

266187948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967 (or 2965 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 266187948 is about 16315.2673284871. The cubic root of 266187948 is about 643.2741941992.

It can be divided in two parts, 2661 and 87948, that added together give a palindrome (90609).

The spelling of 266187948 in words is "two hundred sixty-six million, one hundred eighty-seven thousand, nine hundred forty-eight".