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16280 = 2351137
BaseRepresentation
bin11111110011000
3211022222
43332120
51010110
6203212
765315
oct37630
924288
1016280
1111260
129508
137544
145d0c
154c55
hex3f98

16280 has 32 divisors (see below), whose sum is σ = 41040. Its totient is φ = 5760.

The previous prime is 16273. The next prime is 16301. The reversal of 16280 is 8261.

It can be divided in two parts, 162 and 80, that added together give a palindrome (242).

It is a nialpdrome in base 13.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

16280 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 7 ways as a sum of consecutive naturals, for example, 422 + ... + 458.

216280 is an apocalyptic number.

16280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16280 is the 74-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20520).

16280 is an abundant number, since it is smaller than the sum of its proper divisors (24760).

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

16280 is a wasteful number, since it uses less digits than its factorization.

16280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 16280 is about 127.5931032619. The cubic root of 16280 is about 25.3445625810.

The spelling of 16280 in words is "sixteen thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 37 40 44 55 74 88 110 148 185 220 296 370 407 440 740 814 1480 1628 2035 3256 4070 8140 16280