169228380 has 96 divisors (see below), whose sum is σ = 502548480. Its totient is φ = 42474240.

The previous prime is 169228379. The next prime is 169228391. The reversal of 169228380 is 83822961.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67591 + ... + 70049.

It is an arithmetic number, because the mean of its divisors is an integer number (5234880).

Almost surely, 2^169228380 is an apocalyptic number.

169228380 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 169228380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251274240).

169228380 is an abundant number, since it is smaller than the sum of its proper divisors (333320100).

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

169228380 is a wasteful number, since it uses less digits than its factorization.

169228380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2537 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 169228380 is about 13008.7808806206. The cubic root of 169228380 is about 553.1264149474.

The spelling of 169228380 in words is "one hundred sixty-nine million, two hundred twenty-eight thousand, three hundred eighty".