169169730 has 64 divisors (see below), whose sum is σ = 428976000. Its totient is φ = 42577920.

The previous prime is 169169729. The next prime is 169169743. The reversal of 169169730 is 37961961.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255600 + ... + 256260.

It is an arithmetic number, because the mean of its divisors is an integer number (6702750).

Almost surely, 2^169169730 is an apocalyptic number.

169169730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 169169730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214488000).

169169730 is an abundant number, since it is smaller than the sum of its proper divisors (259806270).

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

169169730 is a wasteful number, since it uses less digits than its factorization.

169169730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 169169730 is about 13006.5264386769. The cubic root of 169169730 is about 553.0625079899.

The spelling of 169169730 in words is "one hundred sixty-nine million, one hundred sixty-nine thousand, seven hundred thirty".