169000128 has 224 divisors, whose sum is σ = 574974720. Its totient is φ = 48107520.

The previous prime is 169000103. The next prime is 169000129. The reversal of 169000128 is 821000961.

It is a super-2 number, since 2×169000128² = 57122086528032768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (169000129) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 322875 + ... + 323397.

Almost surely, 2^169000128 is an apocalyptic number.

169000128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169000128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287487360).

169000128 is an abundant number, since it is smaller than the sum of its proper divisors (405974592).

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

169000128 is a wasteful number, since it uses less digits than its factorization.

169000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 169000128 is about 13000.0049230760. The cubic root of 169000128 is about 552.8776209503.

The spelling of 169000128 in words is "one hundred sixty-nine million, one hundred twenty-eight", and thus it is an aban number.