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1230300011220 = 223574584163901
BaseRepresentation
bin10001111001110011100…
…110000101101011010100
311100121121201112011101020
4101321303212011223110
5130124123300324340
62341105251001140
7154612660356120
oct21716346055324
94317551464336
101230300011220
11434849311a85
1217a534b991b0
138c02ab82a27
144379274a580
1522009d269d0
hex11e73985ad4

1230300011220 has 96 divisors (see below), whose sum is σ = 3937107530496. Its totient is φ = 281200896000.

The previous prime is 1230300011191. The next prime is 1230300011233. The reversal of 1230300011220 is 221100030321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1230300011220.

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, 19221270 + ... + 19285170.

It is an arithmetic number, because the mean of its divisors is an integer number (41011536776).

Almost surely, 21230300011220 is an apocalyptic number.

1230300011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230300011220 is an abundant number, since it is smaller than the sum of its proper divisors (2706807519276).

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

1230300011220 is a wasteful number, since it uses less digits than its factorization.

1230300011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109761 (or 109759 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1230300011220 its reverse (221100030321), we get a palindrome (1451400041541).

The spelling of 1230300011220 in words is "one trillion, two hundred thirty billion, three hundred million, eleven thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 45841 63901 91682 127802 137523 183364 191703 229205 255604 275046 319505 320887 383406 447307 458410 550092 639010 641774 687615 766812 894614 916820 958515 962661 1278020 1283548 1341921 1375230 1604435 1789228 1917030 1925322 2236535 2683842 2750460 3208870 3834060 3850644 4473070 4813305 5367684 6417740 6709605 8946140 9626610 13419210 19253220 26838420 2929285741 5858571482 8787857223 11717142964 14646428705 17575714446 20505000187 29292857410 35151428892 41010000374 43939286115 58585714820 61515000561 82020000748 87878572230 102525000935 123030001122 175757144460 205050001870 246060002244 307575002805 410100003740 615150005610 1230300011220