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18610029 = 322067781
BaseRepresentation
bin100011011111…
…1011101101101
31022000111011100
41012333131231
514231010104
61502513313
7314116434
oct106773555
938014140
1018610029
11a560a99
126295839
133b17869
14268611b
151979139
hex11bf76d

18610029 has 6 divisors (see below), whose sum is σ = 26881166. Its totient is φ = 12406680.

The previous prime is 18610027. The next prime is 18610051. The reversal of 18610029 is 92001681.

It can be written as a sum of positive squares in only one way, i.e., 16621929 + 1988100 = 4077^2 + 1410^2 .

It is not a de Polignac number, because 18610029 - 21 = 18610027 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18609984 and 18610011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18610021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1033882 + ... + 1033899.

Almost surely, 218610029 is an apocalyptic number.

It is an amenable number.

18610029 is a deficient number, since it is larger than the sum of its proper divisors (8271137).

18610029 is a wasteful number, since it uses less digits than its factorization.

18610029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067787 (or 2067784 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 18610029 is about 4313.9342832269. The cubic root of 18610029 is about 265.0019176318.

The spelling of 18610029 in words is "eighteen million, six hundred ten thousand, twenty-nine".

Divisors: 1 3 9 2067781 6203343 18610029