169920330 has 16 divisors (see below), whose sum is σ = 407808864. Its totient is φ = 45312080.

The previous prime is 169920299. The next prime is 169920337. The reversal of 169920330 is 33029961.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 169920291 and 169920300.

It is not an unprimeable number, because it can be changed into a prime (169920337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2831976 + ... + 2832035.

It is an arithmetic number, because the mean of its divisors is an integer number (25488054).

Almost surely, 2^169920330 is an apocalyptic number.

169920330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169920330 is an abundant number, since it is smaller than the sum of its proper divisors (237888534).

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

169920330 is a wasteful number, since it uses less digits than its factorization.

169920330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664021.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 169920330 is about 13035.3492473351. The cubic root of 169920330 is about 553.8792740017.

The spelling of 169920330 in words is "one hundred sixty-nine million, nine hundred twenty thousand, three hundred thirty".