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194308105 = 5474991657
BaseRepresentation
bin10111001010011…
…10100000001001
3111112121212121111
423211032200021
5344220324410
631140410321
74546406635
oct1345164011
9445555544
10194308105
119a755612
12550a69a1
1331343614
141bb3ddc5
15120d2b8a
hexb94e809

194308105 has 16 divisors (see below), whose sum is σ = 238752000. Its totient is φ = 151742592.

The previous prime is 194308097. The next prime is 194308111. The reversal of 194308105 is 501803491.

194308105 is nontrivially palindromic in base 9.

It is a cyclic number.

It is not a de Polignac number, because 194308105 - 23 = 194308097 is a prime.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116437 + ... + 118093.

It is an arithmetic number, because the mean of its divisors is an integer number (14922000).

Almost surely, 2194308105 is an apocalyptic number.

It is an amenable number.

194308105 is a deficient number, since it is larger than the sum of its proper divisors (44443895).

194308105 is a wasteful number, since it uses less digits than its factorization.

194308105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 194308105 is about 13939.4442141715. Note that the first 3 decimals coincide. The cubic root of 194308105 is about 579.2023369044.

The spelling of 194308105 in words is "one hundred ninety-four million, three hundred eight thousand, one hundred five".

Divisors: 1 5 47 235 499 1657 2495 8285 23453 77879 117265 389395 826843 4134215 38861621 194308105