266862444 has 12 divisors (see below), whose sum is σ = 622679064. Its totient is φ = 88954144.

The previous prime is 266862439. The next prime is 266862499. The reversal of 266862444 is 444268662.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 266862396 and 266862405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11119257 + ... + 11119280.

It is an arithmetic number, because the mean of its divisors is an integer number (51889922).

Almost surely, 2^266862444 is an apocalyptic number.

It is an amenable number.

266862444 is an abundant number, since it is smaller than the sum of its proper divisors (355816620).

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

266862444 is a wasteful number, since it uses less digits than its factorization.

266862444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22238544 (or 22238542 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The square root of 266862444 is about 16335.9249508560. The cubic root of 266862444 is about 643.8170686524.

The spelling of 266862444 in words is "two hundred sixty-six million, eight hundred sixty-two thousand, four hundred forty-four".