128489190 has 16 divisors (see below), whose sum is σ = 308374128. Its totient is φ = 34263776.

The previous prime is 128489177. The next prime is 128489209. The reversal of 128489190 is 91984821.

It is a super-3 number, since 3×128489190³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141457 + ... + 2141516.

It is an arithmetic number, because the mean of its divisors is an integer number (19273383).

Almost surely, 2^128489190 is an apocalyptic number.

128489190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128489190 is an abundant number, since it is smaller than the sum of its proper divisors (179884938).

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

128489190 is a wasteful number, since it uses less digits than its factorization.

128489190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282983.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 128489190 is about 11335.3072300666. The cubic root of 128489190 is about 504.6096254422.

The spelling of 128489190 in words is "one hundred twenty-eight million, four hundred eighty-nine thousand, one hundred ninety".