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289444 = 222692
BaseRepresentation
bin1000110101010100100
3112201001011
41012222210
533230234
610112004
72313601
oct1065244
9481034
10289444
11188511
1211b604
13a198c
14776a8
155ab64
hex46aa4

289444 has 9 divisors (see below), whose sum is σ = 508417. Its totient is φ = 144184.

The previous prime is 289439. The next prime is 289453. The reversal of 289444 is 444982.

The square root of 289444 is 538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19044 + 270400 = 138^2 + 520^2 .

It is a Duffinian number.

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, 942 + ... + 1210.

2289444 is an apocalyptic number.

289444 is the 538-th square number.

It is an amenable number.

289444 is a deficient number, since it is larger than the sum of its proper divisors (218973).

289444 is an equidigital number, since it uses as much as digits as its factorization.

289444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 271 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The cubic root of 289444 is about 66.1487310047.

Multiplying 289444 by its product of digits (9216), we get a square (2667515904 = 516482).

The spelling of 289444 in words is "two hundred eighty-nine thousand, four hundred forty-four".

Divisors: 1 2 4 269 538 1076 72361 144722 289444