1272910868 has 12 divisors (see below), whose sum is σ = 2230193280. Its totient is φ = 635712792.

The previous prime is 1272910867. The next prime is 1272910901. The reversal of 1272910868 is 8680192721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272910861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181796 + ... + 188667.

It is an arithmetic number, because the mean of its divisors is an integer number (185849440).

Almost surely, 2^1272910868 is an apocalyptic number.

It is an amenable number.

1272910868 is a deficient number, since it is larger than the sum of its proper divisors (957282412).

1272910868 is a wasteful number, since it uses less digits than its factorization.

1272910868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371326 (or 371324 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1272910868 is about 35677.8764502598. The cubic root of 1272910868 is about 1083.7588696284.

The spelling of 1272910868 in words is "one billion, two hundred seventy-two million, nine hundred ten thousand, eight hundred sixty-eight".