1266064452 has 24 divisors (see below), whose sum is σ = 3282389600. Its totient is φ = 422021448.

The previous prime is 1266064447. The next prime is 1266064453. The reversal of 1266064452 is 2544606621.

1266064452 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 0 + 644 + 5 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1266064453) 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, 5861302 + ... + 5861517.

Almost surely, 2^1266064452 is an apocalyptic number.

1266064452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1266064452 is an abundant number, since it is smaller than the sum of its proper divisors (2016325148).

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

1266064452 is a wasteful number, since it uses less digits than its factorization.

1266064452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11722832 (or 11722824 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1266064452 is about 35581.7994485945. The cubic root of 1266064452 is about 1081.8123581979.

The spelling of 1266064452 in words is "one billion, two hundred sixty-six million, sixty-four thousand, four hundred fifty-two".