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2830385439 = 327211212923
BaseRepresentation
bin1010100010110100…
…0100000100011111
321022020212110220100
42220231010010133
521244034313224
61144504552143
7130065610410
oct25055040437
97266773810
102830385439
111222751522
1266ba82653
133615087ab
141cbc93807
1511873cac9
hexa8b4411f

2830385439 has 24 divisors (see below), whose sum is σ = 4694548352. Its totient is φ = 1609690320.

The previous prime is 2830385423. The next prime is 2830385443. The reversal of 2830385439 is 9345830382.

It is not a de Polignac number, because 2830385439 - 24 = 2830385423 is a prime.

It is a super-2 number, since 2×28303854392 = 16022163466606445442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2830385394 and 2830385403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2830385489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93169 + ... + 119754.

Almost surely, 22830385439 is an apocalyptic number.

2830385439 is a deficient number, since it is larger than the sum of its proper divisors (1864162913).

2830385439 is a wasteful number, since it uses less digits than its factorization.

2830385439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213147 (or 213144 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2830385439 is about 53201.3668903347. The cubic root of 2830385439 is about 1414.5398727846.

The spelling of 2830385439 in words is "two billion, eight hundred thirty million, three hundred eighty-five thousand, four hundred thirty-nine".

Divisors: 1 3 7 9 21 63 211 633 1477 1899 4431 13293 212923 638769 1490461 1916307 4471383 13414149 44926753 134780259 314487271 404340777 943461813 2830385439