1228686716 has 24 divisors (see below), whose sum is σ = 2160972240. Its totient is φ = 611275392.

The previous prime is 1228686709. The next prime is 1228686721. The reversal of 1228686716 is 6176868221.

It is a Smith number, since the sum of its digits (47) 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 7 ways as a sum of consecutive naturals, for example, 894206 + ... + 895578.

It is an arithmetic number, because the mean of its divisors is an integer number (90040510).

Almost surely, 2^1228686716 is an apocalyptic number.

It is an amenable number.

1228686716 is a deficient number, since it is larger than the sum of its proper divisors (932285524).

1228686716 is a wasteful number, since it uses less digits than its factorization.

1228686716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333 (or 2331 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 1228686716 is about 35052.6278044885. The cubic root of 1228686716 is about 1071.0598041710.

The spelling of 1228686716 in words is "one billion, two hundred twenty-eight million, six hundred eighty-six thousand, seven hundred sixteen".