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168380 = 2258419
BaseRepresentation
bin101001000110111100
322112222022
4221012330
520342010
63335312
71300622
oct510674
9275868
10168380
11105563
1281538
135b844
1445512
1534d55
hex291bc

168380 has 12 divisors (see below), whose sum is σ = 353640. Its totient is φ = 67344.

The previous prime is 168353. The next prime is 168391. The reversal of 168380 is 83861.

168380 is digitally balanced in base 2, 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.

168380 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4190 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (29470).

2168380 is an apocalyptic number.

168380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168380 is an abundant number, since it is smaller than the sum of its proper divisors (185260).

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

168380 is a wasteful number, since it uses less digits than its factorization.

168380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428 (or 8426 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 168380 is about 410.3413213411. The cubic root of 168380 is about 55.2200550247.

The spelling of 168380 in words is "one hundred sixty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 8419 16838 33676 42095 84190 168380