1266878460 has 48 divisors (see below), whose sum is σ = 3571092000. Its totient is φ = 335564544.

The previous prime is 1266878429. The next prime is 1266878507. The reversal of 1266878460 is 648786621.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61915 + ... + 79794.

It is an arithmetic number, because the mean of its divisors is an integer number (74397750).

Almost surely, 2^1266878460 is an apocalyptic number.

1266878460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266878460 is an abundant number, since it is smaller than the sum of its proper divisors (2304213540).

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

1266878460 is a wasteful number, since it uses less digits than its factorization.

1266878460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141870 (or 141868 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1266878460 is about 35593.2361552023. The cubic root of 1266878460 is about 1082.0441566275.

The spelling of 1266878460 in words is "one billion, two hundred sixty-six million, eight hundred seventy-eight thousand, four hundred sixty".