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30223001220 = 2235689973013
BaseRepresentation
bin11100001001011011…
…100110011010000100
32220000021220112112120
4130021123212122010
5443344042014340
621514555445540
72116645162116
oct341133463204
986007815476
1030223001220
11118aa107165
125a357568b0
132b08643899
141669cd73b6
15bbd4c84d0
hex7096e6684

30223001220 has 48 divisors (see below), whose sum is σ = 84637828800. Its totient is φ = 8058188416.

The previous prime is 30223001219. The next prime is 30223001243. The reversal of 30223001220 is 2210032203.

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 30223001220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377434 + ... + 450446.

It is an arithmetic number, because the mean of its divisors is an integer number (1763288100).

Almost surely, 230223001220 is an apocalyptic number.

30223001220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30223001220 is an abundant number, since it is smaller than the sum of its proper divisors (54414827580).

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

30223001220 is a wasteful number, since it uses less digits than its factorization.

30223001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79924 (or 79922 counting only the distinct ones).

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

Adding to 30223001220 its reverse (2210032203), we get a palindrome (32433033423).

The spelling of 30223001220 in words is "thirty billion, two hundred twenty-three million, one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 6899 13798 20697 27596 34495 41394 68990 73013 82788 103485 137980 146026 206970 219039 292052 365065 413940 438078 730130 876156 1095195 1460260 2190390 4380780 503716687 1007433374 1511150061 2014866748 2518583435 3022300122 5037166870 6044600244 7555750305 10074333740 15111500610 30223001220