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868185130 = 25242335831
BaseRepresentation
bin110011101111110…
…111010000101010
32020111122101002211
4303233313100222
53234223411010
6222052115334
730341310661
oct6357672052
92214571084
10868185130
1140608237a
12202905b4a
1310ab37617
1483437dd8
155134508a
hex33bf742a

868185130 has 16 divisors (see below), whose sum is σ = 1563421824. Its totient is φ = 347121040.

The previous prime is 868185067. The next prime is 868185139. The reversal of 868185130 is 31581868.

It is not an unprimeable number, because it can be changed into a prime (868185139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6315 + ... + 42145.

It is an arithmetic number, because the mean of its divisors is an integer number (97713864).

Almost surely, 2868185130 is an apocalyptic number.

868185130 is a deficient number, since it is larger than the sum of its proper divisors (695236694).

868185130 is a wasteful number, since it uses less digits than its factorization.

868185130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38261.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 868185130 is about 29464.9814186264. The cubic root of 868185130 is about 953.9759973275.

The spelling of 868185130 in words is "eight hundred sixty-eight million, one hundred eighty-five thousand, one hundred thirty".

Divisors: 1 2 5 10 2423 4846 12115 24230 35831 71662 179155 358310 86818513 173637026 434092565 868185130