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20023012230 = 23513151340007
BaseRepresentation
bin10010101001011101…
…101110101110000110
31220200102211102002120
4102221131232232012
5312001342342410
613110510350410
71306121536644
oct225135565606
956612742076
1020023012230
1185455174a1
123a697bb406
131b713a4140
14d7d396194
157c2cb4570
hex4a976eb86

20023012230 has 64 divisors (see below), whose sum is σ = 52094665728. Its totient is φ = 4896086400.

The previous prime is 20023012211. The next prime is 20023012327. The reversal of 20023012230 is 3221032002.

20023012230 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

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 31 ways as a sum of consecutive naturals, for example, 111114 + ... + 228893.

It is an arithmetic number, because the mean of its divisors is an integer number (813979152).

Almost surely, 220023012230 is an apocalyptic number.

20023012230 is an abundant number, since it is smaller than the sum of its proper divisors (32071653498).

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

20023012230 is a wasteful number, since it uses less digits than its factorization.

20023012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340181.

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

Adding to 20023012230 its reverse (3221032002), we get a palindrome (23244044232).

The spelling of 20023012230 in words is "twenty billion, twenty-three million, twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 151 195 302 390 453 755 906 1510 1963 2265 3926 4530 5889 9815 11778 19630 29445 58890 340007 680014 1020021 1700035 2040042 3400070 4420091 5100105 8840182 10200210 13260273 22100455 26520546 44200910 51341057 66301365 102682114 132602730 154023171 256705285 308046342 513410570 667433741 770115855 1334867482 1540231710 2002301223 3337168705 4004602446 6674337410 10011506115 20023012230