1266496528 has 80 divisors (see below), whose sum is σ = 2827319040. Its totient is φ = 543542400.

The previous prime is 1266496523. The next prime is 1266496529. The reversal of 1266496528 is 8256946621.

It is not an unprimeable number, because it can be changed into a prime (1266496523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1561243 + ... + 1562053.

It is an arithmetic number, because the mean of its divisors is an integer number (35341488).

Almost surely, 2^1266496528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266496528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413659520).

1266496528 is an abundant number, since it is smaller than the sum of its proper divisors (1560822512).

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

1266496528 is a wasteful number, since it uses less digits than its factorization.

1266496528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1310 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 1266496528 is about 35587.8705179166. The cubic root of 1266496528 is about 1081.9354093302.

It can be divided in two parts, 1266 and 496528, that added together give a palindrome (497794).

The spelling of 1266496528 in words is "one billion, two hundred sixty-six million, four hundred ninety-six thousand, five hundred twenty-eight".