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20302030122 = 23111789203309
BaseRepresentation
bin10010111010000110…
…000110010100101010
31221101212211222200120
4102322012012110222
5313034304430442
613154314544110
71316050260123
oct227206062452
957355758616
1020302030122
118678a6a7a0
123b27138036
131bb713679a
14da846704a
157dc52b4ec
hex4ba18652a

20302030122 has 64 divisors (see below), whose sum is σ = 47428156800. Its totient is φ = 5725153280.

The previous prime is 20302030121. The next prime is 20302030163. The reversal of 20302030122 is 22103020302.

It is not an unprimeable number, because it can be changed into a prime (20302030121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1797 + ... + 201512.

It is an arithmetic number, because the mean of its divisors is an integer number (741064950).

Almost surely, 220302030122 is an apocalyptic number.

20302030122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20302030122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23714078400).

20302030122 is an abundant number, since it is smaller than the sum of its proper divisors (27126126678).

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

20302030122 is a wasteful number, since it uses less digits than its factorization.

20302030122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203431.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20302030122 its reverse (22103020302), we get a palindrome (42405050424).

The spelling of 20302030122 in words is "twenty billion, three hundred two million, thirty thousand, one hundred twenty-two".

Divisors: 1 2 3 6 11 17 22 33 34 51 66 89 102 178 187 267 374 534 561 979 1122 1513 1958 2937 3026 4539 5874 9078 16643 33286 49929 99858 203309 406618 609927 1219854 2236399 3456253 4472798 6709197 6912506 10368759 13418394 18094501 20737518 36189002 38018783 54283503 76037566 108567006 114056349 199039511 228112698 307606517 398079022 597118533 615213034 922819551 1194237066 1845639102 3383671687 6767343374 10151015061 20302030122