1266247460 has 12 divisors (see below), whose sum is σ = 2659119708. Its totient is φ = 506498976.

The previous prime is 1266247459. The next prime is 1266247487. The reversal of 1266247460 is 647426621.

It can be written as a sum of positive squares in 2 ways, for example, as 515925796 + 750321664 = 22714^2 + 27392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31656167 + ... + 31656206.

It is an arithmetic number, because the mean of its divisors is an integer number (221593309).

Almost surely, 2^1266247460 is an apocalyptic number.

1266247460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266247460 is an abundant number, since it is smaller than the sum of its proper divisors (1392872248).

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

1266247460 is a wasteful number, since it uses less digits than its factorization.

1266247460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63312382 (or 63312380 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 1266247460 is about 35584.3710075083. The cubic root of 1266247460 is about 1081.8644805516.

The spelling of 1266247460 in words is "one billion, two hundred sixty-six million, two hundred forty-seven thousand, four hundred sixty".