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2012159205 = 335716313063
BaseRepresentation
bin111011111101111…
…0001110011100101
312012020020021112000
41313323301303211
513110103043310
6531355315513
7100602033240
oct16773616345
95166207460
102012159205
119428a1aa1
12481a4bb99
13260b43964
14151342257
15bb9b54c0
hex77ef1ce5

2012159205 has 64 divisors (see below), whose sum is σ = 4113592320. Its totient is φ = 914131008.

The previous prime is 2012159203. The next prime is 2012159213. The reversal of 2012159205 is 5029512102.

It is not a de Polignac number, because 2012159205 - 21 = 2012159203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012159203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 147504 + ... + 160566.

It is an arithmetic number, because the mean of its divisors is an integer number (64274880).

Almost surely, 22012159205 is an apocalyptic number.

It is an amenable number.

2012159205 is an abundant number, since it is smaller than the sum of its proper divisors (2101433115).

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

2012159205 is a wasteful number, since it uses less digits than its factorization.

2012159205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247 (or 13241 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 2012159205 is about 44857.0975989308. The cubic root of 2012159205 is about 1262.4691660607.

The spelling of 2012159205 in words is "two billion, twelve million, one hundred fifty-nine thousand, two hundred five".

Divisors: 1 3 5 7 9 15 21 27 35 45 63 105 135 163 189 315 489 815 945 1141 1467 2445 3423 4401 5705 7335 10269 13063 17115 22005 30807 39189 51345 65315 91441 117567 154035 195945 274323 352701 457205 587835 822969 1371615 1763505 2129269 2468907 4114845 6387807 10646345 12344535 14904883 19163421 31939035 44714649 57490263 74524415 95817105 134143947 223573245 287451315 402431841 670719735 2012159205