1266436 has 24 divisors (see below), whose sum is σ = 2340800. Its totient is φ = 598752.

The previous prime is 1266431. The next prime is 1266451. The reversal of 1266436 is 6346621.

1266436 is a nontrivial binomial coefficient, being equal to C(1592, 2).

It is not an unprimeable number, because it can be changed into a prime (1266431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6265 + ... + 6463.

2^1266436 is an apocalyptic number.

1266436 is the 1591-st triangular number and also the 796-th hexagonal number.

1266436 is the 531-st centered nonagonal number.

It is an amenable number.

1266436 is a deficient number, since it is larger than the sum of its proper divisors (1074364).

1266436 is a wasteful number, since it uses less digits than its factorization.

1266436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 1266436 is about 1125.3603867206. The cubic root of 1266436 is about 108.1918173218.

The spelling of 1266436 in words is "one million, two hundred sixty-six thousand, four hundred thirty-six".