266240516 has 12 divisors (see below), whose sum is σ = 466038300. Its totient is φ = 133086720.

The previous prime is 266240473. The next prime is 266240551. The reversal of 266240516 is 615042662.

It can be written as a sum of positive squares in 2 ways, for example, as 215972416 + 50268100 = 14696^2 + 7090^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20636 + ... + 30956.

It is an arithmetic number, because the mean of its divisors is an integer number (38836525).

Almost surely, 2^266240516 is an apocalyptic number.

It is an amenable number.

266240516 is a deficient number, since it is larger than the sum of its proper divisors (199797784).

266240516 is a wasteful number, since it uses less digits than its factorization.

266240516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16774 (or 16772 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 266240516 is about 16316.8782553526. The cubic root of 266240516 is about 643.3165369778.

The spelling of 266240516 in words is "two hundred sixty-six million, two hundred forty thousand, five hundred sixteen".