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830638286 = 21972398821
BaseRepresentation
bin110001100000101…
…000100011001110
32010212222210111222
4301200220203032
53200120411121
6214231243342
726404210652
oct6140504316
92125883458
10830638286
11396967925
121b2219552
1310311c55a
147c462a62
154cdca0ab
hex318288ce

830638286 has 16 divisors (see below), whose sum is σ = 1257664320. Its totient is φ = 411435360.

The previous prime is 830638279. The next prime is 830638297. The reversal of 830638286 is 682836038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89756 + ... + 98576.

It is an arithmetic number, because the mean of its divisors is an integer number (78604020).

Almost surely, 2830638286 is an apocalyptic number.

830638286 is a deficient number, since it is larger than the sum of its proper divisors (427026034).

830638286 is a wasteful number, since it uses less digits than its factorization.

830638286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9259.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 830638286 is about 28820.7960681172. The cubic root of 830638286 is about 940.0204786545.

The spelling of 830638286 in words is "eight hundred thirty million, six hundred thirty-eight thousand, two hundred eighty-six".

Divisors: 1 2 197 239 394 478 8821 17642 47083 94166 1737737 2108219 3475474 4216438 415319143 830638286