1280886108 has 12 divisors (see below), whose sum is σ = 2988734280. Its totient is φ = 426962032.

The previous prime is 1280886073. The next prime is 1280886109. The reversal of 1280886108 is 8016880821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1280886108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280886109) 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, 53370243 + ... + 53370266.

It is an arithmetic number, because the mean of its divisors is an integer number (249061190).

Almost surely, 2^1280886108 is an apocalyptic number.

It is an amenable number.

1280886108 is an abundant number, since it is smaller than the sum of its proper divisors (1707848172).

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

1280886108 is a wasteful number, since it uses less digits than its factorization.

1280886108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106740516 (or 106740514 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 42.

The square root of 1280886108 is about 35789.4692332815. The cubic root of 1280886108 is about 1086.0175375073.

The spelling of 1280886108 in words is "one billion, two hundred eighty million, eight hundred eighty-six thousand, one hundred eight".