128204190 has 48 divisors (see below), whose sum is σ = 336471408. Its totient is φ = 33865728.

The previous prime is 128204179. The next prime is 128204239. The reversal of 128204190 is 91402821.

It is a super-2 number, since 2×128204190² = 32872628667112200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2974 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (7009821).

Almost surely, 2^128204190 is an apocalyptic number.

128204190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128204190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168235704).

128204190 is an abundant number, since it is smaller than the sum of its proper divisors (208267218).

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

128204190 is a wasteful number, since it uses less digits than its factorization.

128204190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13433 (or 13430 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 128204190 is about 11322.7289113535. The cubic root of 128204190 is about 504.2362601682.

The spelling of 128204190 in words is "one hundred twenty-eight million, two hundred four thousand, one hundred ninety".