128194712 has 8 divisors (see below), whose sum is σ = 240365100. Its totient is φ = 64097352.

The previous prime is 128194681. The next prime is 128194721. The reversal of 128194712 is 217491821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 8012162 + ... + 8012177.

Almost surely, 2^128194712 is an apocalyptic number.

It is an amenable number.

128194712 is a deficient number, since it is larger than the sum of its proper divisors (112170388).

128194712 is a wasteful number, since it uses less digits than its factorization.

128194712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16024345 (or 16024341 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 128194712 is about 11322.3103649388. The cubic root of 128194712 is about 504.2238339778.

The spelling of 128194712 in words is "one hundred twenty-eight million, one hundred ninety-four thousand, seven hundred twelve".