170428860 has 360 divisors, whose sum is σ = 660456720. Its totient is φ = 36578304.

The previous prime is 170428849. The next prime is 170428861. The reversal of 170428860 is 68824071.

170428860 is a `hidden beast` number, since 170 + 428 + 8 + 60 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170428861) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1508164 + ... + 1508276.

It is an arithmetic number, because the mean of its divisors is an integer number (1834602).

Almost surely, 2^170428860 is an apocalyptic number.

170428860 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 170428860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330228360).

170428860 is an abundant number, since it is smaller than the sum of its proper divisors (490027860).

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

170428860 is a wasteful number, since it uses less digits than its factorization.

170428860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 170428860 is about 13054.8404815992. The cubic root of 170428860 is about 554.4312654544.

The spelling of 170428860 in words is "one hundred seventy million, four hundred twenty-eight thousand, eight hundred sixty".