169244928 has 216 divisors, whose sum is σ = 538083000. Its totient is φ = 50921472.

The previous prime is 169244917. The next prime is 169244941. The reversal of 169244928 is 829442961.

It can be written as a sum of positive squares in 4 ways, for example, as 18249984 + 150994944 = 4272^2 + 12288^2 .

It is a nude number because it is divisible by every one of its digits.

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, 1135798 + ... + 1135946.

It is an arithmetic number, because the mean of its divisors is an integer number (2491125).

Almost surely, 2^169244928 is an apocalyptic number.

169244928 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 169244928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269041500).

169244928 is an abundant number, since it is smaller than the sum of its proper divisors (368838072).

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

169244928 is a wasteful number, since it uses less digits than its factorization.

169244928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 200 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 169244928 is about 13009.4168970020. The cubic root of 169244928 is about 553.1444435184.

The spelling of 169244928 in words is "one hundred sixty-nine million, two hundred forty-four thousand, nine hundred twenty-eight".