170489420 has 24 divisors (see below), whose sum is σ = 358872864. Its totient is φ = 68034816.

The previous prime is 170489381. The next prime is 170489437. The reversal of 170489420 is 24984071.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184 + ... + 18503.

It is an arithmetic number, because the mean of its divisors is an integer number (14953036).

Almost surely, 2^170489420 is an apocalyptic number.

170489420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170489420 is an abundant number, since it is smaller than the sum of its proper divisors (188383444).

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

170489420 is a wasteful number, since it uses less digits than its factorization.

170489420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20129 (or 20127 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 170489420 is about 13057.1597217772. The cubic root of 170489420 is about 554.4969280056.

The spelling of 170489420 in words is "one hundred seventy million, four hundred eighty-nine thousand, four hundred twenty".