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120081087 = 3274146489
BaseRepresentation
bin1110010100001…
…00101010111111
322100221202021200
413022010222333
5221220043322
615525430543
72655446430
oct712045277
9270852250
10120081087
1161867775
123426b453
131bb54ac9
1411d3b487
15a81e8ac
hex7284abf

120081087 has 24 divisors (see below), whose sum is σ = 203068320. Its totient is φ = 66942720.

The previous prime is 120081079. The next prime is 120081109. The reversal of 120081087 is 780180021.

It is not a de Polignac number, because 120081087 - 23 = 120081079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120081087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120081067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20662 + ... + 25827.

It is an arithmetic number, because the mean of its divisors is an integer number (8461180).

Almost surely, 2120081087 is an apocalyptic number.

120081087 is a deficient number, since it is larger than the sum of its proper divisors (82987233).

120081087 is a wasteful number, since it uses less digits than its factorization.

120081087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46543 (or 46540 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 120081087 is about 10958.1516233350. The cubic root of 120081087 is about 493.3534885950.

The spelling of 120081087 in words is "one hundred twenty million, eighty-one thousand, eighty-seven".

Divisors: 1 3 7 9 21 41 63 123 287 369 861 2583 46489 139467 325423 418401 976269 1906049 2928807 5718147 13342343 17154441 40027029 120081087