170091420 has 96 divisors (see below), whose sum is σ = 517601280. Its totient is φ = 41575680.

The previous prime is 170091413. The next prime is 170091431. The reversal of 170091420 is 24190071.

170091420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 32934 + ... + 37746.

It is an arithmetic number, because the mean of its divisors is an integer number (5391680).

Almost surely, 2^170091420 is an apocalyptic number.

170091420 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 170091420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258800640).

170091420 is an abundant number, since it is smaller than the sum of its proper divisors (347509860).

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

170091420 is a wasteful number, since it uses less digits than its factorization.

170091420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875 (or 4873 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 170091420 is about 13041.9101361725. The cubic root of 170091420 is about 554.0651089703.

The spelling of 170091420 in words is "one hundred seventy million, ninety-one thousand, four hundred twenty".