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2169284268 = 223180773689
BaseRepresentation
bin1000000101001100…
…1010011010101100
312121011220001120210
42001103022122230
513420314044033
6555131142420
7104520416634
oct20123123254
95534801523
102169284268
11a13560418
125065a4a10
13287568978
141681636c4
15ca6a0d63
hex814ca6ac

2169284268 has 12 divisors (see below), whose sum is σ = 5061663320. Its totient is φ = 723094752.

The previous prime is 2169284263. The next prime is 2169284281. The reversal of 2169284268 is 8624829612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2169284263) 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 3 ways as a sum of consecutive naturals, for example, 90386833 + ... + 90386856.

Almost surely, 22169284268 is an apocalyptic number.

It is an amenable number.

2169284268 is an abundant number, since it is smaller than the sum of its proper divisors (2892379052).

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

2169284268 is a wasteful number, since it uses less digits than its factorization.

2169284268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180773696 (or 180773694 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 2169284268 is about 46575.5758740566. The cubic root of 2169284268 is about 1294.5102361280.

The spelling of 2169284268 in words is "two billion, one hundred sixty-nine million, two hundred eighty-four thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 12 180773689 361547378 542321067 723094756 1084642134 2169284268