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20012113300 = 22521553128861
BaseRepresentation
bin10010101000110100…
…001001110110010100
31220122200022200120111
4102220310021312110
5311441100111200
613105441012404
71305630104434
oct225064116624
956580280514
1020012113300
11853a352a13
123a66024104
131b6c05937a
14d7bb5a2c4
157c1d600ba
hex4a8d09d94

20012113300 has 36 divisors (see below), whose sum is σ = 43454585916. Its totient is φ = 7999628800.

The previous prime is 20012113229. The next prime is 20012113301. The reversal of 20012113300 is 331121002.

It can be written as a sum of positive squares in 6 ways, for example, as 4738119556 + 15273993744 = 68834^2 + 123588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012113301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90870 + ... + 219730.

It is an arithmetic number, because the mean of its divisors is an integer number (1207071831).

Almost surely, 220012113300 is an apocalyptic number.

20012113300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012113300 is an abundant number, since it is smaller than the sum of its proper divisors (23442472616).

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

20012113300 is a wasteful number, since it uses less digits than its factorization.

20012113300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130428 (or 130421 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20012113300 its reverse (331121002), we get a palindrome (20343234302).

The spelling of 20012113300 in words is "twenty billion, twelve million, one hundred thirteen thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1553 3106 6212 7765 15530 31060 38825 77650 128861 155300 257722 515444 644305 1288610 2577220 3221525 6443050 12886100 200121133 400242266 800484532 1000605665 2001211330 4002422660 5003028325 10006056650 20012113300