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BaseRepresentation
bin11111010010111110
320111211210
4133102332
513100230
62425250
71042506
oct372276
9214753
10128190
1188347
1262226
134646a
1434a06
1527eb0
hex1f4be

128190 has 16 divisors (see below), whose sum is σ = 307728. Its totient is φ = 34176.

The previous prime is 128189. The next prime is 128201. The reversal of 128190 is 91821.

128190 is nontrivially palindromic in base 12.

It is a super-2 number, since 2×1281902 = 32865352200, which contains 22 as substring.

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, 2107 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (19233).

2128190 is an apocalyptic number.

128190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128190 is an abundant number, since it is smaller than the sum of its proper divisors (179538).

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

128190 is a wasteful number, since it uses less digits than its factorization.

128190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 128190 is about 358.0363110077. The cubic root of 128190 is about 50.4217656053.

The spelling of 128190 in words is "one hundred twenty-eight thousand, one hundred ninety".