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222680 = 23519293
BaseRepresentation
bin110110010111011000
3102022110102
4312113120
524111210
64434532
71615133
oct662730
9368412
10222680
11142337
12a8a48
137a483
145b21a
1545ea5
hex365d8

222680 has 32 divisors (see below), whose sum is σ = 529200. Its totient is φ = 84096.

The previous prime is 222679. The next prime is 222707. The reversal of 222680 is 86222.

222680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614 + ... + 906.

2222680 is an apocalyptic number.

222680 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 222680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264600).

222680 is an abundant number, since it is smaller than the sum of its proper divisors (306520).

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

222680 is a wasteful number, since it uses less digits than its factorization.

222680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 222680 is about 471.8898176481. The cubic root of 222680 is about 60.6122497720.

The spelling of 222680 in words is "two hundred twenty-two thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 293 380 586 760 1172 1465 2344 2930 5567 5860 11134 11720 22268 27835 44536 55670 111340 222680