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220080 = 24357131
BaseRepresentation
bin110101101110110000
3102011220010
4311232300
524020310
64414520
71604430
oct655660
9364803
10220080
11140393
12a7440
1379233
145a2c0
1545320
hex35bb0

220080 has 80 divisors (see below), whose sum is σ = 785664. Its totient is φ = 49920.

The previous prime is 220063. The next prime is 220123. The reversal of 220080 is 80022.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 12.

It is an unprimeable number.

220080 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, 1615 + ... + 1745.

2220080 is an apocalyptic number.

220080 is a gapful number since it is divisible by the number (20) 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 220080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392832).

220080 is an abundant number, since it is smaller than the sum of its proper divisors (565584).

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

220080 is a wasteful number, since it uses less digits than its factorization.

220080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 220080 is about 469.1268485175. The cubic root of 220080 is about 60.3754238276.

The spelling of 220080 in words is "two hundred twenty thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 131 140 168 210 240 262 280 336 393 420 524 560 655 786 840 917 1048 1310 1572 1680 1834 1965 2096 2620 2751 3144 3668 3930 4585 5240 5502 6288 7336 7860 9170 10480 11004 13755 14672 15720 18340 22008 27510 31440 36680 44016 55020 73360 110040 220080