128090166 has 8 divisors (see below), whose sum is σ = 256180344. Its totient is φ = 42696720.

The previous prime is 128090159. The next prime is 128090173. The reversal of 128090166 is 661090821.

It is an interprime number because it is at equal distance from previous prime (128090159) and next prime (128090173).

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

128090166 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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 in 3 ways as a sum of consecutive naturals, for example, 10674175 + ... + 10674186.

It is an arithmetic number, because the mean of its divisors is an integer number (32022543).

Almost surely, 2^128090166 is an apocalyptic number.

128090166 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.

128090166 is a wasteful number, since it uses less digits than its factorization.

128090166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21348366.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 128090166 is about 11317.6926093617. The cubic root of 128090166 is about 504.0867276426.

The spelling of 128090166 in words is "one hundred twenty-eight million, ninety thousand, one hundred sixty-six".