169280 has 42 divisors (see below), whose sum is σ = 421386. Its totient is φ = 64768.

The previous prime is 169259. The next prime is 169283. The reversal of 169280 is 82961.

169280 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 135424 + 33856 = 368^2 + 184^2 .

It is a nialpdrome in base 4.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169283) by changing a digit.

169280 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7349 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (10033).

2¹⁶⁹²⁸⁰ is an apocalyptic number.

169280 is a gapful number since it is divisible by the number (10) 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 169280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210693).

169280 is an abundant number, since it is smaller than the sum of its proper divisors (252106).

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

169280 is an equidigital number, since it uses as much as digits as its factorization.

169280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 169280 is about 411.4365078600. The cubic root of 169280 is about 55.3182649571.

The spelling of 169280 in words is "one hundred sixty-nine thousand, two hundred eighty".