1266212352 has 80 divisors (see below), whose sum is σ = 3400353792. Its totient is φ = 418682880.

The previous prime is 1266212351. The next prime is 1266212359. The reversal of 1266212352 is 2532126621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266212351) 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, 191827 + ... + 198317.

Almost surely, 2^1266212352 is an apocalyptic number.

1266212352 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 1266212352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700176896).

1266212352 is an abundant number, since it is smaller than the sum of its proper divisors (2134141440).

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

1266212352 is an equidigital number, since it uses as much as digits as its factorization.

1266212352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639 (or 6623 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1266212352 is about 35583.8776976315. The cubic root of 1266212352 is about 1081.8544818612.

Adding to 1266212352 its reverse (2532126621), we get a palindrome (3798338973).

The spelling of 1266212352 in words is "one billion, two hundred sixty-six million, two hundred twelve thousand, three hundred fifty-two".