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2020306140 = 2232511223923
BaseRepresentation
bin111100001101011…
…0110110011011100
312012210120012000100
41320122312303130
513114144244030
6532250101100
7101031214236
oct17032666334
95183505010
102020306140
119474569a6
1248471a790
13262736c28
14152463256
15bc574360
hex786b6cdc

2020306140 has 36 divisors (see below), whose sum is σ = 6128262504. Its totient is φ = 538748256.

The previous prime is 2020306111. The next prime is 2020306151. The reversal of 2020306140 is 416030202.

It is a happy number.

2020306140 is a `hidden beast` number, since 2 + 0 + 20 + 30 + 614 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5611782 + ... + 5612141.

It is an arithmetic number, because the mean of its divisors is an integer number (170229514).

Almost surely, 22020306140 is an apocalyptic number.

2020306140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020306140 is an abundant number, since it is smaller than the sum of its proper divisors (4107956364).

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

2020306140 is a wasteful number, since it uses less digits than its factorization.

2020306140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223938 (or 11223933 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2020306140 is about 44947.8157422583. The cubic root of 2020306140 is about 1264.1707219799.

Adding to 2020306140 its reverse (416030202), we get a palindrome (2436336342).

The spelling of 2020306140 in words is "two billion, twenty million, three hundred six thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 11223923 22447846 33671769 44895692 56119615 67343538 101015307 112239230 134687076 168358845 202030614 224478460 336717690 404061228 505076535 673435380 1010153070 2020306140