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69120189 = 3312292083
BaseRepresentation
bin1000001111010…
…11000010111101
311211001200002000
410013223002331
5120143321224
610505252513
71466340405
oct407530275
9154050060
1069120189
1136020026
121b194139
1311421228
149273805
1561050c9
hex41eb0bd

69120189 has 16 divisors (see below), whose sum is σ = 102532800. Its totient is φ = 46020528.

The previous prime is 69120187. The next prime is 69120217. The reversal of 69120189 is 98102196.

It is not a de Polignac number, because 69120189 - 21 = 69120187 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69120187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32142 + ... + 34224.

It is an arithmetic number, because the mean of its divisors is an integer number (6408300).

Almost surely, 269120189 is an apocalyptic number.

It is an amenable number.

69120189 is a deficient number, since it is larger than the sum of its proper divisors (33412611).

69120189 is a wasteful number, since it uses less digits than its factorization.

69120189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 69120189 is about 8313.8552429063. The cubic root of 69120189 is about 410.3946012593.

The spelling of 69120189 in words is "sixty-nine million, one hundred twenty thousand, one hundred eighty-nine".

Divisors: 1 3 9 27 1229 2083 3687 6249 11061 18747 33183 56241 2560007 7680021 23040063 69120189