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2161363470 = 235712781041
BaseRepresentation
bin1000000011010011…
…1100101000001110
312120121222122021220
42000310330220032
513411302112340
6554245304210
7104363200140
oct20064745016
95517878256
102161363470
11a0a040402
12503a05066
13285a245c6
141670a0c90
15c9b38ed0
hex80d3ca0e

2161363470 has 64 divisors (see below), whose sum is σ = 5975064576. Its totient is φ = 490129920.

The previous prime is 2161363447. The next prime is 2161363489. The reversal of 2161363470 is 743631612.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13851 + ... + 67190.

It is an arithmetic number, because the mean of its divisors is an integer number (93360384).

Almost surely, 22161363470 is an apocalyptic number.

2161363470 is an abundant number, since it is smaller than the sum of its proper divisors (3813701106).

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

2161363470 is a wasteful number, since it uses less digits than its factorization.

2161363470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81185.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 2161363470 is about 46490.4664420567. The cubic root of 2161363470 is about 1292.9327482040.

The spelling of 2161363470 in words is "two billion, one hundred sixty-one million, three hundred sixty-three thousand, four hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 127 210 254 381 635 762 889 1270 1778 1905 2667 3810 4445 5334 8890 13335 26670 81041 162082 243123 405205 486246 567287 810410 1134574 1215615 1701861 2431230 2836435 3403722 5672870 8509305 10292207 17018610 20584414 30876621 51461035 61753242 72045449 102922070 144090898 154383105 216136347 308766210 360227245 432272694 720454490 1080681735 2161363470