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189029029 = 7227337353
BaseRepresentation
bin10110100010001…
…01101010100101
3111011200200002011
423101011222211
5341342412104
630431314221
74453502020
oct1321055245
9434620064
10189029029
119777a342
125337b971
13302157c7
141b1681b7
15118dd904
hexb445aa5

189029029 has 16 divisors (see below), whose sum is σ = 218245248. Its totient is φ = 160376832.

The previous prime is 189029023. The next prime is 189029039. The reversal of 189029029 is 920920981.

It is not a de Polignac number, because 189029029 - 25 = 189028997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189028982 and 189029000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189029023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535317 + ... + 535669.

It is an arithmetic number, because the mean of its divisors is an integer number (13640328).

Almost surely, 2189029029 is an apocalyptic number.

It is an amenable number.

189029029 is a deficient number, since it is larger than the sum of its proper divisors (29216219).

189029029 is a wasteful number, since it uses less digits than its factorization.

189029029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 189029029 is about 13748.7828188535. The cubic root of 189029029 is about 573.9087345336.

The spelling of 189029029 in words is "one hundred eighty-nine million, twenty-nine thousand, twenty-nine".

Divisors: 1 7 227 337 353 1589 2359 2471 76499 80131 118961 535493 560917 832727 27004147 189029029