1266396132 has 48 divisors (see below), whose sum is σ = 3116960000. Its totient is φ = 399077280.

The previous prime is 1266396101. The next prime is 1266396133. The reversal of 1266396132 is 2316936621.

It is a super-2 number, since 2×1266396132² = 3207518326289122848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1266396133) 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 15 ways as a sum of consecutive naturals, for example, 108207 + ... + 119337.

Almost surely, 2^1266396132 is an apocalyptic number.

1266396132 is a gapful number since it is divisible by the number (12) 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 1266396132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1558480000).

1266396132 is an abundant number, since it is smaller than the sum of its proper divisors (1850563868).

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

1266396132 is a wasteful number, since it uses less digits than its factorization.

1266396132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11656 (or 11654 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 1266396132 is about 35586.4599531901. The cubic root of 1266396132 is about 1081.9068200012.

The spelling of 1266396132 in words is "one billion, two hundred sixty-six million, three hundred ninety-six thousand, one hundred thirty-two".