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20302003020 = 22351379329471
BaseRepresentation
bin10010111010000101…
…111111101101001100
31221101212210121111210
4102322011333231030
5313034303044040
613154314214420
71316050115115
oct227205775514
957355717453
1020302003020
118678a513a2
123b27124410
131bb7127350
14da845b20c
157dc523480
hex4ba17fb4c

20302003020 has 96 divisors (see below), whose sum is σ = 61993451520. Its totient is φ = 4934142720.

The previous prime is 20302003003. The next prime is 20302003027. The reversal of 20302003020 is 2030020302.

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 = 20302002987 and 20302003005.

It is not an unprimeable number, because it can be changed into a prime (20302003027) 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, 103116 + ... + 226355.

It is an arithmetic number, because the mean of its divisors is an integer number (645765120).

Almost surely, 220302003020 is an apocalyptic number.

20302003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302003020 is an abundant number, since it is smaller than the sum of its proper divisors (41691448500).

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

20302003020 is a wasteful number, since it uses less digits than its factorization.

20302003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329575 (or 329573 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

Adding to 20302003020 its reverse (2030020302), we get a palindrome (22332023322).

The spelling of 20302003020 in words is "twenty billion, three hundred two million, three thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 79 130 156 158 195 237 260 316 390 395 474 780 790 948 1027 1185 1580 2054 2370 3081 4108 4740 5135 6162 10270 12324 15405 20540 30810 61620 329471 658942 988413 1317884 1647355 1976826 3294710 3953652 4283123 4942065 6589420 8566246 9884130 12849369 17132492 19768260 21415615 25698738 26028209 42831230 51397476 52056418 64246845 78084627 85662460 104112836 128493690 130141045 156169254 256987380 260282090 312338508 338366717 390423135 520564180 676733434 780846270 1015100151 1353466868 1561692540 1691833585 2030200302 3383667170 4060400604 5075500755 6767334340 10151001510 20302003020