1266880 has 56 divisors (see below), whose sum is σ = 3127248. Its totient is φ = 488448.

The previous prime is 1266869. The next prime is 1266883. The reversal of 1266880 is 886621.

It is not an unprimeable number, because it can be changed into a prime (1266883) 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, 11787 + ... + 11893.

2^1266880 is an apocalyptic number.

1266880 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 1266880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563624).

1266880 is an abundant number, since it is smaller than the sum of its proper divisors (1860368).

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

1266880 is a wasteful number, since it uses less digits than its factorization.

1266880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1266880 is about 1125.5576395725. The cubic root of 1266880 is about 108.2044595067.

The spelling of 1266880 in words is "one million, two hundred sixty-six thousand, eight hundred eighty".