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219122 = 23312
BaseRepresentation
bin110101011111110010
3102010120122
4311133302
524002442
64410242
71601561
oct653762
9363518
10219122
1113a6a2
12a6982
1378977
1459bd8
1544dd2
hex357f2

219122 has 6 divisors (see below), whose sum is σ = 329679. Its totient is φ = 109230.

The previous prime is 219119. The next prime is 219133. The reversal of 219122 is 221912.

Multipling 219122 by its product of digits (72), we get a square (15776784 = 39722).

219122 is digitally balanced in base 3, 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 only one way, i.e., 109561 + 109561 = 331^2 + 331^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=331.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219122.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 219122.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 497 + ... + 827.

2219122 is an apocalyptic number.

219122 is a deficient number, since it is larger than the sum of its proper divisors (110557).

219122 is an frugal number, since it uses more digits than its factorization.

219122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 333 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 219122 is about 468.1046891455. The cubic root of 219122 is about 60.2876924205.

The spelling of 219122 in words is "two hundred nineteen thousand, one hundred twenty-two".

Divisors: 1 2 331 662 109561 219122