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20012302020 = 223529471072287
BaseRepresentation
bin10010101000110100…
…110111111011000100
31220122200200021110010
4102220310313323010
5311441122131040
613105445030220
71305631521564
oct225064677304
956580607403
1020012302020
11853a471787
123a660b5370
131b6c0c4239
14d7bba8da4
157c1d9ae80
hex4a8d37ec4

20012302020 has 192 divisors, whose sum is σ = 59779399680. Its totient is φ = 4993648128.

The previous prime is 20012302019. The next prime is 20012302021. The reversal of 20012302020 is 2020321002.

It is an interprime number because it is at equal distance from previous prime (20012302019) and next prime (20012302021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20012301987 and 20012302005.

It is not an unprimeable number, because it can be changed into a prime (20012302021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8749317 + ... + 8751603.

It is an arithmetic number, because the mean of its divisors is an integer number (311351040).

Almost surely, 220012302020 is an apocalyptic number.

20012302020 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 20012302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29889699840).

20012302020 is an abundant number, since it is smaller than the sum of its proper divisors (39767097660).

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

20012302020 is a wasteful number, since it uses less digits than its factorization.

20012302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20012302020 its reverse (2020321002), we get a palindrome (22032623022).

The spelling of 20012302020 in words is "twenty billion, twelve million, three hundred two thousand, twenty".