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30864195 = 3254714593
BaseRepresentation
bin111010110111…
…1001101000011
32011002001201100
41311233031003
530400123240
63021305443
7523225035
oct165571503
964061640
1030864195
11164707aa
12a405283
13651844b
144155c55
152a99e30
hex1d6f343

30864195 has 24 divisors (see below), whose sum is σ = 54639936. Its totient is φ = 16109568.

The previous prime is 30864193. The next prime is 30864199. The reversal of 30864195 is 59146803.

30864195 is a `hidden beast` number, since 3 + 0 + 8 + 641 + 9 + 5 = 666.

It is not a de Polignac number, because 30864195 - 21 = 30864193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30864193) 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, 5182 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (2276664).

Almost surely, 230864195 is an apocalyptic number.

30864195 is a deficient number, since it is larger than the sum of its proper divisors (23775741).

30864195 is a wasteful number, since it uses less digits than its factorization.

30864195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651 (or 14648 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 30864195 is about 5555.5553277778. Note that the first 3 decimals coincide. The cubic root of 30864195 is about 313.6786677198.

The spelling of 30864195 in words is "thirty million, eight hundred sixty-four thousand, one hundred ninety-five".

Divisors: 1 3 5 9 15 45 47 141 235 423 705 2115 14593 43779 72965 131337 218895 656685 685871 2057613 3429355 6172839 10288065 30864195