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2160631300 = 225221606313
BaseRepresentation
bin1000000011001000…
…1001111000000100
312120120121102221111
42000302021320010
513411110200200
6554221454404
7104354030422
oct20062117004
95516542844
102160631300
11a09690303
12503711404
13285829279
14166d50112
15c9a420ba
hex80c89e04

2160631300 has 18 divisors (see below), whose sum is σ = 4688570138. Its totient is φ = 864252480.

The previous prime is 2160631279. The next prime is 2160631357. The reversal of 2160631300 is 31360612.

It can be written as a sum of positive squares in 3 ways, for example, as 7485696 + 2153145604 = 2736^2 + 46402^2 .

It is a super-2 number, since 2×21606313002 = 9336655229079380000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10803057 + ... + 10803256.

Almost surely, 22160631300 is an apocalyptic number.

2160631300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2160631300 is an abundant number, since it is smaller than the sum of its proper divisors (2527938838).

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

2160631300 is a wasteful number, since it uses less digits than its factorization.

2160631300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21606327 (or 21606320 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2160631300 is about 46482.5913649401. The cubic root of 2160631300 is about 1292.7867364392.

Adding to 2160631300 its reverse (31360612), we get a palindrome (2191991912).

The spelling of 2160631300 in words is "two billion, one hundred sixty million, six hundred thirty-one thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 21606313 43212626 86425252 108031565 216063130 432126260 540157825 1080315650 2160631300