128958216 has 16 divisors (see below), whose sum is σ = 322395600. Its totient is φ = 42986064.

The previous prime is 128958197. The next prime is 128958229. The reversal of 128958216 is 612859821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686606 + ... + 2686653.

It is an arithmetic number, because the mean of its divisors is an integer number (20149725).

Almost surely, 2^128958216 is an apocalyptic number.

It is an amenable number.

128958216 is an abundant number, since it is smaller than the sum of its proper divisors (193437384).

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

128958216 is a wasteful number, since it uses less digits than its factorization.

128958216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373268 (or 5373264 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 128958216 is about 11355.9771045912. The cubic root of 128958216 is about 505.2228745342. Note that the first 3 decimals are identical.

The spelling of 128958216 in words is "one hundred twenty-eight million, nine hundred fifty-eight thousand, two hundred sixteen".