1266427008 has 256 divisors, whose sum is σ = 4660992000. Its totient is φ = 328872960.

The previous prime is 1266427003. The next prime is 1266427027. The reversal of 1266427008 is 8007246621.

1266427008 is a `hidden beast` number, since 1 + 2 + 6 + 642 + 7 + 0 + 0 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266427003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263733 + ... + 268491.

It is an arithmetic number, because the mean of its divisors is an integer number (18207000).

Almost surely, 2^1266427008 is an apocalyptic number.

1266427008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266427008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2330496000).

1266427008 is an abundant number, since it is smaller than the sum of its proper divisors (3394564992).

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

1266427008 is a wasteful number, since it uses less digits than its factorization.

1266427008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800 (or 4782 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1266427008 is about 35586.8937672284. The cubic root of 1266427008 is about 1081.9156125853.

The spelling of 1266427008 in words is "one billion, two hundred sixty-six million, four hundred twenty-seven thousand, eight".