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2015042068 = 221373530833
BaseRepresentation
bin111100000011011…
…0001101000010100
312012102122202001201
41320012301220110
513111322321233
6531541202244
7100635401134
oct17006615024
95172582051
102015042068
11944490a26
12482a00384
13261612bb0
14151892ac4
15bbd8477d
hex781b1a14

2015042068 has 24 divisors (see below), whose sum is σ = 3849608168. Its totient is φ = 917277696.

The previous prime is 2015042063. The next prime is 2015042069. The reversal of 2015042068 is 8602405102.

It can be written as a sum of positive squares in 4 ways, for example, as 565107984 + 1449934084 = 23772^2 + 38078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015042063) 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 7 ways as a sum of consecutive naturals, for example, 261621 + ... + 269212.

Almost surely, 22015042068 is an apocalyptic number.

It is an amenable number.

2015042068 is a deficient number, since it is larger than the sum of its proper divisors (1834566100).

2015042068 is a wasteful number, since it uses less digits than its factorization.

2015042068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530923 (or 530921 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 2015042068 is about 44889.2199531246. The cubic root of 2015042068 is about 1263.0718004312.

The spelling of 2015042068 in words is "two billion, fifteen million, forty-two thousand, sixty-eight".

Divisors: 1 2 4 13 26 52 73 146 292 949 1898 3796 530833 1061666 2123332 6900829 13801658 27603316 38750809 77501618 155003236 503760517 1007521034 2015042068