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2180200000 = 265511991
BaseRepresentation
bin1000000111110011…
…0011011001000000
312121221102122011011
42001330303121000
513431112400000
61000201130304
7105012252136
oct20174633100
95557378134
102180200000
11a19736590
1250a189994
132898bb294
141697a5756
15cb60a2ba
hex81f33640

2180200000 has 168 divisors, whose sum is σ = 5905122048. Its totient is φ = 792000000.

The previous prime is 2180199979. The next prime is 2180200013. The reversal of 2180200000 is 20812.

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 23 ways as a sum of consecutive naturals, for example, 2199505 + ... + 2200495.

It is an arithmetic number, because the mean of its divisors is an integer number (35149536).

Almost surely, 22180200000 is an apocalyptic number.

2180200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2180200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2952561024).

2180200000 is an abundant number, since it is smaller than the sum of its proper divisors (3724922048).

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

2180200000 is an frugal number, since it uses more digits than its factorization.

2180200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2180200000 is about 46692.6118352786. The cubic root of 2180200000 is about 1296.6779083077.

Adding to 2180200000 its reverse (20812), we get a palindrome (2180220812).

The spelling of 2180200000 in words is "two billion, one hundred eighty million, two hundred thousand".