169429128 has 64 divisors (see below), whose sum is σ = 470836800. Its totient is φ = 50369280.

The previous prime is 169429121. The next prime is 169429151. The reversal of 169429128 is 821924961.

It is a self number, because there is not a number n which added to its sum of digits gives 169429128.

It is not an unprimeable number, because it can be changed into a prime (169429121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7938 + ... + 20046.

It is an arithmetic number, because the mean of its divisors is an integer number (7356825).

Almost surely, 2^169429128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169429128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235418400).

169429128 is an abundant number, since it is smaller than the sum of its proper divisors (301407672).

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

169429128 is a wasteful number, since it uses less digits than its factorization.

169429128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12182 (or 12178 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 169429128 is about 13016.4944589548. The cubic root of 169429128 is about 553.3450448320.

The spelling of 169429128 in words is "one hundred sixty-nine million, four hundred twenty-nine thousand, one hundred twenty-eight".