169730 has 16 divisors (see below), whose sum is σ = 333504. Its totient is φ = 61680.

The previous prime is 169709. The next prime is 169733. The reversal of 169730 is 37961.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 169730.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662 + ... + 881.

It is an arithmetic number, because the mean of its divisors is an integer number (20844).

2¹⁶⁹⁷³⁰ is an apocalyptic number.

169730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169730 is a deficient number, since it is larger than the sum of its proper divisors (163774).

169730 is a wasteful number, since it uses less digits than its factorization.

169730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 169730 is about 411.9830093584. The cubic root of 169730 is about 55.3672394249.

Subtracting from 169730 its reverse (37961), we obtain a square (131769 = 363²).

The spelling of 169730 in words is "one hundred sixty-nine thousand, seven hundred thirty".