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2830345 = 57193419
BaseRepresentation
bin1010110011000000001001
312022210111121
422303000021
51211032340
6140355241
733025510
oct12630011
95283447
102830345
111663531
12b45b21
1378137b
14539677
153ad94a
hex2b3009

2830345 has 16 divisors (see below), whose sum is σ = 3911040. Its totient is φ = 1926144.

The previous prime is 2830301. The next prime is 2830349. The reversal of 2830345 is 5430382.

It is a cyclic number.

It is not a de Polignac number, because 2830345 - 211 = 2828297 is a prime.

2830345 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2830349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6546 + ... + 6964.

It is an arithmetic number, because the mean of its divisors is an integer number (244440).

22830345 is an apocalyptic number.

It is an amenable number.

2830345 is a deficient number, since it is larger than the sum of its proper divisors (1080695).

2830345 is a wasteful number, since it uses less digits than its factorization.

2830345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2830345 is about 1682.3629216076. The cubic root of 2830345 is about 141.4533136028.

The spelling of 2830345 in words is "two million, eight hundred thirty thousand, three hundred forty-five".

Divisors: 1 5 7 35 193 419 965 1351 2095 2933 6755 14665 80867 404335 566069 2830345