169440768 has 320 divisors, whose sum is σ = 612817920. Its totient is φ = 45121536.

The previous prime is 169440767. The next prime is 169440779. The reversal of 169440768 is 867044961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169440767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1645005 + ... + 1645107.

It is an arithmetic number, because the mean of its divisors is an integer number (1915056).

Almost surely, 2^169440768 is an apocalyptic number.

169440768 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 169440768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306408960).

169440768 is an abundant number, since it is smaller than the sum of its proper divisors (443377152).

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

169440768 is a wasteful number, since it uses less digits than its factorization.

169440768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 169440768 is about 13016.9415762690. The cubic root of 169440768 is about 553.3577163817.

The spelling of 169440768 in words is "one hundred sixty-nine million, four hundred forty thousand, seven hundred sixty-eight".