128199234 has 8 divisors (see below), whose sum is σ = 256398480. Its totient is φ = 42733076.

The previous prime is 128199187. The next prime is 128199241. The reversal of 128199234 is 432991821.

It is a sphenic number, since it is the product of 3 distinct primes.

128199234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 128199192 and 128199201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10683264 + ... + 10683275.

It is an arithmetic number, because the mean of its divisors is an integer number (32049810).

Almost surely, 2^128199234 is an apocalyptic number.

128199234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128199234 is a wasteful number, since it uses less digits than its factorization.

128199234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21366544.

The product of its digits is 31104, while the sum is 39.

The square root of 128199234 is about 11322.5100574033. The cubic root of 128199234 is about 504.2297626502.

The spelling of 128199234 in words is "one hundred twenty-eight million, one hundred ninety-nine thousand, two hundred thirty-four".