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30223331220 = 22354112285907
BaseRepresentation
bin11100001001011100…
…110110111110010100
32220000022112022012210
4130021130312332110
5443344133044340
621515010513420
72116651035165
oct341134667624
986008468183
1030223331220
11118aa312095
125a35895870
132b0872ab54
141669d8176c
15bbd541180
hex709736f94

30223331220 has 48 divisors (see below), whose sum is σ = 86689366848. Its totient is φ = 7862979840.

The previous prime is 30223331213. The next prime is 30223331269. The reversal of 30223331220 is 2213332203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6140494 + ... + 6145413.

It is an arithmetic number, because the mean of its divisors is an integer number (1806028476).

Almost surely, 230223331220 is an apocalyptic number.

30223331220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30223331220 is an abundant number, since it is smaller than the sum of its proper divisors (56466035628).

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

30223331220 is a wasteful number, since it uses less digits than its factorization.

30223331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12285960 (or 12285958 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 30223331220 its reverse (2213332203), we get a palindrome (32436663423).

The spelling of 30223331220 in words is "thirty billion, two hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 41 60 82 123 164 205 246 410 492 615 820 1230 2460 12285907 24571814 36857721 49143628 61429535 73715442 122859070 147430884 184288605 245718140 368577210 503722187 737154420 1007444374 1511166561 2014888748 2518610935 3022333122 5037221870 6044666244 7555832805 10074443740 15111665610 30223331220