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20232144212 = 22723411136781
BaseRepresentation
bin10010110101111011…
…100000010101010100
31221020000100102020112
4102311323200111110
5312413412103322
613143341022152
71314241250120
oct226573402524
957200312215
1020232144212
118642577445
123b07854958
131ba5807b87
14d9d074580
157d63245e2
hex4b5ee0554

20232144212 has 96 divisors (see below), whose sum is σ = 43642658304. Its totient is φ = 8018841600.

The previous prime is 20232144209. The next prime is 20232144223. The reversal of 20232144212 is 21244123202.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2980262 + ... + 2987042.

It is an arithmetic number, because the mean of its divisors is an integer number (454611024).

Almost surely, 220232144212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20232144212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21821329152).

20232144212 is an abundant number, since it is smaller than the sum of its proper divisors (23410514092).

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

20232144212 is a wasteful number, since it uses less digits than its factorization.

20232144212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969 (or 6967 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20232144212 its reverse (21244123202), we get a palindrome (41476267414).

The spelling of 20232144212 in words is "twenty billion, two hundred thirty-two million, one hundred forty-four thousand, two hundred twelve".

Divisors: 1 2 4 7 14 23 28 41 46 82 92 113 161 164 226 287 322 452 574 644 791 943 1148 1582 1886 2599 3164 3772 4633 5198 6601 6781 9266 10396 13202 13562 18193 18532 26404 27124 32431 36386 47467 64862 72772 94934 106559 129724 155963 189868 213118 278021 311926 426236 556042 623852 745913 766253 1091741 1112084 1491826 1532506 1946147 2183482 2983652 3065012 3892294 4366964 5363771 6394483 7784588 10727542 12788966 17623819 21455084 25577932 31416373 35247638 44761381 62832746 70495276 89522762 123366733 125665492 179045524 219914611 246733466 439829222 493466932 722576579 879658444 1445153158 2890306316 5058036053 10116072106 20232144212