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163380 = 22357389
BaseRepresentation
bin100111111000110100
322022010010
4213320310
520212010
63300220
71250220
oct477064
9268103
10163380
11101828
127a670
1359499
1443780
1533620
hex27e34

163380 has 48 divisors (see below), whose sum is σ = 524160. Its totient is φ = 37248.

The previous prime is 163367. The next prime is 163393. The reversal of 163380 is 83361.

It is an interprime number because it is at equal distance from previous prime (163367) and next prime (163393).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

163380 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 15 ways as a sum of consecutive naturals, for example, 226 + ... + 614.

It is an arithmetic number, because the mean of its divisors is an integer number (10920).

2163380 is an apocalyptic number.

163380 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 163380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262080).

163380 is an abundant number, since it is smaller than the sum of its proper divisors (360780).

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

163380 is a wasteful number, since it uses less digits than its factorization.

163380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 163380 is about 404.2029193363. The cubic root of 163380 is about 54.6679720754.

The spelling of 163380 in words is "one hundred sixty-three thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 389 420 778 1167 1556 1945 2334 2723 3890 4668 5446 5835 7780 8169 10892 11670 13615 16338 23340 27230 32676 40845 54460 81690 163380