1266262956 has 120 divisors (see below), whose sum is σ = 3847683840. Its totient is φ = 355619808.

The previous prime is 1266262937. The next prime is 1266262967. The reversal of 1266262956 is 6592626621.

It is a happy number.

1266262956 is a `hidden beast` number, since 12 + 6 + 6 + 2 + 629 + 5 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 129081 + ... + 138543.

It is an arithmetic number, because the mean of its divisors is an integer number (32064032).

Almost surely, 2^1266262956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266262956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1923841920).

1266262956 is an abundant number, since it is smaller than the sum of its proper divisors (2581420884).

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

1266262956 is a wasteful number, since it uses less digits than its factorization.

1266262956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9545 (or 9534 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1266262956 is about 35584.5887428814. The cubic root of 1266262956 is about 1081.8688937237.

The spelling of 1266262956 in words is "one billion, two hundred sixty-six million, two hundred sixty-two thousand, nine hundred fifty-six".