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19282919192020 = 22511671321990313
BaseRepresentation
bin1000110001001101001111…
…00011000111010111010100
32112021102120210102011022001
410120212213203013113110
510011412404303121040
6105002241211445044
74030100466514231
oct430464743072724
975242523364261
1019282919192020
1161649271a7610
1221b51aa756784
13a9b4aa19c633
144a9426640788
152368d649359a
hex1189a78c75d4

19282919192020 has 96 divisors (see below), whose sum is σ = 44868734741376. Its totient is φ = 6902078515200.

The previous prime is 19282919191999. The next prime is 19282919192077. The reversal of 19282919192020 is 2029191928291.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18976384 + ... + 19966696.

It is an arithmetic number, because the mean of its divisors is an integer number (467382653556).

Almost surely, 219282919192020 is an apocalyptic number.

19282919192020 is a gapful number since it is divisible by the number (10) 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 19282919192020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22434367370688).

19282919192020 is an abundant number, since it is smaller than the sum of its proper divisors (25585815549356).

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

19282919192020 is a wasteful number, since it uses less digits than its factorization.

19282919192020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991721 (or 991719 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 55.

The spelling of 19282919192020 in words is "nineteen trillion, two hundred eighty-two billion, nine hundred nineteen million, one hundred ninety-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 67 110 134 220 268 335 670 737 1321 1340 1474 2642 2948 3685 5284 6605 7370 13210 14531 14740 26420 29062 58124 72655 88507 145310 177014 290620 354028 442535 885070 973577 990313 1770140 1947154 1980626 3894308 3961252 4867885 4951565 9735770 9903130 10893443 19471540 19806260 21786886 43573772 54467215 66350971 108934430 132701942 217868860 265403884 331754855 663509710 729860681 1308203473 1327019420 1459721362 2616406946 2919442724 3649303405 5232813892 6541017365 7298606810 13082034730 14390238203 14597213620 26164069460 28780476406 57560952812 71951191015 87649632691 143902382030 175299265382 287804764060 350598530764 438248163455 876496326910 964145959601 1752992653820 1928291919202 3856583838404 4820729798005 9641459596010 19282919192020