1266804402 has 32 divisors (see below), whose sum is σ = 2686182912. Its totient is φ = 396904704.

The previous prime is 1266804401. The next prime is 1266804403. The reversal of 1266804402 is 2044086621.

It is an interprime number because it is at equal distance from previous prime (1266804401) and next prime (1266804403).

It is not an unprimeable number, because it can be changed into a prime (1266804401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73503 + ... + 89085.

It is an arithmetic number, because the mean of its divisors is an integer number (83943216).

Almost surely, 2^1266804402 is an apocalyptic number.

1266804402 is an abundant number, since it is smaller than the sum of its proper divisors (1419378510).

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

1266804402 is a wasteful number, since it uses less digits than its factorization.

1266804402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16402.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 1266804402 is about 35592.1958018889. The cubic root of 1266804402 is about 1082.0230718405.

The spelling of 1266804402 in words is "one billion, two hundred sixty-six million, eight hundred four thousand, four hundred two".