169849728 has 96 divisors (see below), whose sum is σ = 499318560. Its totient is φ = 55394304.

The previous prime is 169849727. The next prime is 169849741. The reversal of 169849728 is 827948961.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169849727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52576 + ... + 55712.

It is an arithmetic number, because the mean of its divisors is an integer number (5201235).

Almost surely, 2^169849728 is an apocalyptic number.

169849728 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 169849728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249659280).

169849728 is an abundant number, since it is smaller than the sum of its proper divisors (329468832).

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

169849728 is a wasteful number, since it uses less digits than its factorization.

169849728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204 (or 3189 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 169849728 is about 13032.6408682201. The cubic root of 169849728 is about 553.8025509833.

The spelling of 169849728 in words is "one hundred sixty-nine million, eight hundred forty-nine thousand, seven hundred twenty-eight".