1266188 has 24 divisors (see below), whose sum is σ = 2763264. Its totient is φ = 493200.

The previous prime is 1266163. The next prime is 1266191. The reversal of 1266188 is 8816621.

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, 1748 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (115136).

2^1266188 is an apocalyptic number.

It is an amenable number.

1266188 is an abundant number, since it is smaller than the sum of its proper divisors (1497076).

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

1266188 is a wasteful number, since it uses less digits than its factorization.

1266188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133 (or 4131 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1266188 is about 1125.2501944012. The cubic root of 1266188 is about 108.1847546350.

The spelling of 1266188 in words is "one million, two hundred sixty-six thousand, one hundred eighty-eight".