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2830369 = 9772897
BaseRepresentation
bin1010110011000000100001
312022210112111
422303000201
51211032434
6140355321
733025543
oct12630041
95283474
102830369
111663553
12b45b41
13781399
14539693
153ad964
hex2b3021

2830369 has 4 divisors (see below), whose sum is σ = 2834244. Its totient is φ = 2826496.

The previous prime is 2830367. The next prime is 2830379. The reversal of 2830369 is 9630382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1537600 + 1292769 = 1240^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 2830369 - 21 = 2830367 is a prime.

It is a super-2 number, since 2×28303692 = 16021977352322, which contains 22 as substring.

It is a Duffinian number.

2830369 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2830369.

It is not an unprimeable number, because it can be changed into a prime (2830361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (708561).

22830369 is an apocalyptic number.

It is an amenable number.

2830369 is a deficient number, since it is larger than the sum of its proper divisors (3875).

2830369 is an equidigital number, since it uses as much as digits as its factorization.

2830369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 2830369 is about 1682.3700544173. The cubic root of 2830369 is about 141.4537134210.

The spelling of 2830369 in words is "two million, eight hundred thirty thousand, three hundred sixty-nine".

Divisors: 1 977 2897 2830369