266240216 has 32 divisors (see below), whose sum is σ = 545676480. Its totient is φ = 120775200.

The previous prime is 266240119. The next prime is 266240231. The reversal of 266240216 is 612042662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45371 + ... + 50901.

It is an arithmetic number, because the mean of its divisors is an integer number (17052390).

Almost surely, 2^266240216 is an apocalyptic number.

It is an amenable number.

266240216 is an abundant number, since it is smaller than the sum of its proper divisors (279436264).

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

266240216 is a wasteful number, since it uses less digits than its factorization.

266240216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6095 (or 6091 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 266240216 is about 16316.8690624151. The cubic root of 266240216 is about 643.3162953479.

Adding to 266240216 its reverse (612042662), we get a palindrome (878282878).

The spelling of 266240216 in words is "two hundred sixty-six million, two hundred forty thousand, two hundred sixteen".