170425920 has 168 divisors, whose sum is σ = 629619264. Its totient is φ = 38943744.

The previous prime is 170425919. The next prime is 170425921. The reversal of 170425920 is 29524071.

170425920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (170425919) and next prime (170425921).

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (170425921) 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 23 ways as a sum of consecutive naturals, for example, 45229 + ... + 48851.

Almost surely, 2^170425920 is an apocalyptic number.

170425920 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 170425920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314809632).

170425920 is an abundant number, since it is smaller than the sum of its proper divisors (459193344).

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

170425920 is a wasteful number, since it uses less digits than its factorization.

170425920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 170425920 is about 13054.7278792015. The cubic root of 170425920 is about 554.4280773455.

Adding to 170425920 its reverse (29524071), we get a palindrome (199949991).

The spelling of 170425920 in words is "one hundred seventy million, four hundred twenty-five thousand, nine hundred twenty".