266978232 has 24 divisors (see below), whose sum is σ = 723066240. Its totient is φ = 88992720.

The previous prime is 266978221. The next prime is 266978267. The reversal of 266978232 is 232879662.

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 1853944 + ... + 1854087.

It is an arithmetic number, because the mean of its divisors is an integer number (30127760).

Almost surely, 2^266978232 is an apocalyptic number.

It is an amenable number.

266978232 is an abundant number, since it is smaller than the sum of its proper divisors (456088008).

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

266978232 is a wasteful number, since it uses less digits than its factorization.

266978232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708043 (or 3708036 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 266978232 is about 16339.4685348086. The cubic root of 266978232 is about 643.9101696907.

The spelling of 266978232 in words is "two hundred sixty-six million, nine hundred seventy-eight thousand, two hundred thirty-two".