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20002020010 = 257258396991
BaseRepresentation
bin10010101000001101…
…101001101010101010
31220121222022220011221
4102220031221222222
5311431004120020
613104440412254
71305445236100
oct225015515252
956558286157
1020002020010
118534689755
123a6277708a
131b69c341cb
14d7a68dc70
157c10196aa
hex4a8369aaa

20002020010 has 48 divisors (see below), whose sum is σ = 41894945280. Its totient is φ = 6855680160.

The previous prime is 20002019963. The next prime is 20002020013. The reversal of 20002020010 is 1002020002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 20002019975 and 20002020002.

It is not an unprimeable number, because it can be changed into a prime (20002020013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2857615 + ... + 2864605.

It is an arithmetic number, because the mean of its divisors is an integer number (872811360).

Almost surely, 220002020010 is an apocalyptic number.

20002020010 is an abundant number, since it is smaller than the sum of its proper divisors (21892925270).

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

20002020010 is a wasteful number, since it uses less digits than its factorization.

20002020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851 (or 12844 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20002020010 its reverse (1002020002), we get a palindrome (21004040012).

The spelling of 20002020010 in words is "twenty billion, two million, twenty thousand, ten".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 5839 6991 11678 13982 29195 34955 40873 48937 58390 69910 81746 97874 204365 244685 286111 342559 408730 489370 572222 685118 1430555 1712795 2861110 3425590 40820449 81640898 204102245 285743143 408204490 571486286 1428715715 2000202001 2857431430 4000404002 10001010005 20002020010