266870872 has 8 divisors (see below), whose sum is σ = 500382900. Its totient is φ = 133435432.

The previous prime is 266870867. The next prime is 266870873. The reversal of 266870872 is 278078662.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266870873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16679422 + ... + 16679437.

Almost surely, 2^266870872 is an apocalyptic number.

It is an amenable number.

266870872 is a deficient number, since it is larger than the sum of its proper divisors (233512028).

266870872 is a wasteful number, since it uses less digits than its factorization.

266870872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33358865 (or 33358861 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 266870872 is about 16336.1829078889. The cubic root of 266870872 is about 643.8238462180.

The spelling of 266870872 in words is "two hundred sixty-six million, eight hundred seventy thousand, eight hundred seventy-two".