1266454080 has 168 divisors, whose sum is σ = 4438799352. Its totient is φ = 331309056.

The previous prime is 1266454009. The next prime is 1266454081. The reversal of 1266454080 is 804546621.

1266454080 is a `hidden beast` number, since 1 + 2 + 6 + 645 + 4 + 0 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 632623104 + 633830976 = 25152^2 + 25176^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1266454081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148492 + ... + 156788.

Almost surely, 2^1266454080 is an apocalyptic number.

1266454080 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 1266454080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2219399676).

1266454080 is an abundant number, since it is smaller than the sum of its proper divisors (3172345272).

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

1266454080 is a wasteful number, since it uses less digits than its factorization.

1266454080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373 (or 8360 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1266454080 is about 35587.2741299471. The cubic root of 1266454080 is about 1081.9233217836.

The spelling of 1266454080 in words is "one billion, two hundred sixty-six million, four hundred fifty-four thousand, eighty".