128946216 has 32 divisors (see below), whose sum is σ = 368418240. Its totient is φ = 36841728.

The previous prime is 128946163. The next prime is 128946247. The reversal of 128946216 is 612649821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383601 + ... + 383936.

It is an arithmetic number, because the mean of its divisors is an integer number (11513070).

Almost surely, 2^128946216 is an apocalyptic number.

It is an amenable number.

128946216 is an abundant number, since it is smaller than the sum of its proper divisors (239472024).

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

128946216 is a wasteful number, since it uses less digits than its factorization.

128946216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767553 (or 767549 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 128946216 is about 11355.4487361795. The cubic root of 128946216 is about 505.2072031466.

It can be divided in two parts, 12894 and 6216, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 128946216 in words is "one hundred twenty-eight million, nine hundred forty-six thousand, two hundred sixteen".