1266546240 has 224 divisors, whose sum is σ = 4731471360. Its totient is φ = 317841408.

The previous prime is 1266546191. The next prime is 1266546263. The reversal of 1266546240 is 426456621.

1266546240 is a `hidden beast` number, since 1 + 26 + 6 + 5 + 4 + 624 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1266546195 and 1266546204.

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 31 ways as a sum of consecutive naturals, for example, 142569 + ... + 151191.

It is an arithmetic number, because the mean of its divisors is an integer number (21122640).

Almost surely, 2^1266546240 is an apocalyptic number.

1266546240 is a gapful number since it is divisible by the number (10) 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 1266546240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2365735680).

1266546240 is an abundant number, since it is smaller than the sum of its proper divisors (3464925120).

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

1266546240 is a wasteful number, since it uses less digits than its factorization.

1266546240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666 (or 8650 counting only the distinct ones).

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

The square root of 1266546240 is about 35588.5689512798. The cubic root of 1266546240 is about 1081.9495650393.

The spelling of 1266546240 in words is "one billion, two hundred sixty-six million, five hundred forty-six thousand, two hundred forty".