128458194 has 8 divisors (see below), whose sum is σ = 256916400. Its totient is φ = 42819396.

The previous prime is 128458193. The next prime is 128458217. The reversal of 128458194 is 491854821.

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

128458194 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (128458193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10704844 + ... + 10704855.

It is an arithmetic number, because the mean of its divisors is an integer number (32114550).

Almost surely, 2^128458194 is an apocalyptic number.

128458194 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.

128458194 is a wasteful number, since it uses less digits than its factorization.

128458194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409704.

The product of its digits is 92160, while the sum is 42.

The square root of 128458194 is about 11333.9399151398. The cubic root of 128458194 is about 504.5690457954.

The spelling of 128458194 in words is "one hundred twenty-eight million, four hundred fifty-eight thousand, one hundred ninety-four".