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161083044 = 223234912821
BaseRepresentation
bin10011001100111…
…10111010100100
3102020002212101200
421212132322210
5312214124134
623552322500
73664116603
oct1146367244
9366085350
10161083044
1182a22091
1245b43430
13274ac715
1417571a3a
15e21d499
hex999eea4

161083044 has 36 divisors (see below), whose sum is σ = 408380700. Its totient is φ = 53536320.

The previous prime is 161083033. The next prime is 161083049. The reversal of 161083044 is 440380161.

161083044 is a `hidden beast` number, since 1 + 610 + 8 + 3 + 0 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56430144 + 104652900 = 7512^2 + 10230^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 161082999 and 161083017.

It is not an unprimeable number, because it can be changed into a prime (161083049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6154 + ... + 18974.

Almost surely, 2161083044 is an apocalyptic number.

It is an amenable number.

161083044 is an abundant number, since it is smaller than the sum of its proper divisors (247297656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161083044 is a wasteful number, since it uses less digits than its factorization.

161083044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13180 (or 13175 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 161083044 is about 12691.8495106111. The cubic root of 161083044 is about 544.1057005176.

The spelling of 161083044 in words is "one hundred sixty-one million, eighty-three thousand, forty-four".

Divisors: 1 2 3 4 6 9 12 18 36 349 698 1047 1396 2094 3141 4188 6282 12564 12821 25642 38463 51284 76926 115389 153852 230778 461556 4474529 8949058 13423587 17898116 26847174 40270761 53694348 80541522 161083044