170986140 has 240 divisors, whose sum is σ = 604473408. Its totient is φ = 40144896.

The previous prime is 170986121. The next prime is 170986147. The reversal of 170986140 is 41689071.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 170986095 and 170986104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170986147) 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 79 ways as a sum of consecutive naturals, for example, 484204 + ... + 484556.

Almost surely, 2^170986140 is an apocalyptic number.

170986140 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 170986140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302236704).

170986140 is an abundant number, since it is smaller than the sum of its proper divisors (433487268).

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

170986140 is a wasteful number, since it uses less digits than its factorization.

170986140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 170986140 is about 13076.1668695379. The cubic root of 170986140 is about 555.0349138007.

It can be divided in two parts, 170 and 986140, that added together give a triangular number (986310 = T₁₄₀₄).

The spelling of 170986140 in words is "one hundred seventy million, nine hundred eighty-six thousand, one hundred forty".