170982420 has 96 divisors (see below), whose sum is σ = 550841088. Its totient is φ = 38817792.

The previous prime is 170982397. The next prime is 170982421. The reversal of 170982420 is 24289071.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170982421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64644 + ... + 67236.

It is an arithmetic number, because the mean of its divisors is an integer number (5737928).

Almost surely, 2^170982420 is an apocalyptic number.

170982420 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 170982420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275420544).

170982420 is an abundant number, since it is smaller than the sum of its proper divisors (379858668).

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

170982420 is a wasteful number, since it uses less digits than its factorization.

170982420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769 (or 2767 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 170982420 is about 13076.0246252445. The cubic root of 170982420 is about 555.0308886307.

The spelling of 170982420 in words is "one hundred seventy million, nine hundred eighty-two thousand, four hundred twenty".