1266282100 has 36 divisors (see below), whose sum is σ = 2842591500. Its totient is φ = 489045760.

The previous prime is 1266282097. The next prime is 1266282109. The reversal of 1266282100 is 12826621.

It can be written as a sum of positive squares in 6 ways, for example, as 255296484 + 1010985616 = 15978^2 + 31796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266282109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215425 + ... + 221224.

It is an arithmetic number, because the mean of its divisors is an integer number (78960875).

Almost surely, 2^1266282100 is an apocalyptic number.

1266282100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266282100 is an abundant number, since it is smaller than the sum of its proper divisors (1576309400).

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

1266282100 is a wasteful number, since it uses less digits than its factorization.

1266282100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436692 (or 436685 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1266282100 is about 35584.8577347163. The cubic root of 1266282100 is about 1081.8743457755.

The spelling of 1266282100 in words is "one billion, two hundred sixty-six million, two hundred eighty-two thousand, one hundred".