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220960 = 2551381
BaseRepresentation
bin110101111100100000
3102020002201
4311330200
524032320
64422544
71610125
oct657440
9366081
10220960
11141013
12a7a54
137975c
145a74c
154570a
hex35f20

220960 has 24 divisors (see below), whose sum is σ = 522396. Its totient is φ = 88320.

The previous prime is 220939. The next prime is 220973. The reversal of 220960 is 69022.

220960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 219024 + 1936 = 468^2 + 44^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531 + ... + 850.

2220960 is an apocalyptic number.

220960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220960 is an abundant number, since it is smaller than the sum of its proper divisors (301436).

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

220960 is a wasteful number, since it uses less digits than its factorization.

220960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 220960 is about 470.0638254535. The cubic root of 220960 is about 60.4557881119.

Adding to 220960 its reverse (69022), we get a palindrome (289982).

The spelling of 220960 in words is "two hundred twenty thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1381 2762 5524 6905 11048 13810 22096 27620 44192 55240 110480 220960