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20233023020 = 22573722717207
BaseRepresentation
bin10010110101111110…
…110110111000101100
31221020002000001201222
4102311332312320230
5312414123214040
613143411522512
71314251600210
oct226576667054
957202001658
1020233023020
118643017731
123b07bb9438
131ba5a54b92
14d9d222940
157d6449bb5
hex4b5fb6e2c

20233023020 has 96 divisors (see below), whose sum is σ = 50094277632. Its totient is φ = 6719424768.

The previous prime is 20233022989. The next prime is 20233023029. The reversal of 20233023020 is 2032033202.

It is a self number, because there is not a number n which added to its sum of digits gives 20233023020.

It is not an unprimeable number, because it can be changed into a prime (20233023029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1167257 + ... + 1184463.

It is an arithmetic number, because the mean of its divisors is an integer number (521815392).

Almost surely, 220233023020 is an apocalyptic number.

20233023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20233023020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25047138816).

20233023020 is an abundant number, since it is smaller than the sum of its proper divisors (29861254612).

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

20233023020 is a wasteful number, since it uses less digits than its factorization.

20233023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487 (or 17485 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 20233023020 its reverse (2032033202), we get a palindrome (22265056222).

The spelling of 20233023020 in words is "twenty billion, two hundred thirty-three million, twenty-three thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 37 70 74 140 148 185 227 259 370 454 518 740 908 1036 1135 1295 1589 2270 2590 3178 4540 5180 6356 7945 8399 15890 16798 17207 31780 33596 34414 41995 58793 68828 83990 86035 117586 120449 167980 172070 235172 240898 293965 344140 481796 587930 602245 636659 1175860 1204490 1273318 2408980 2546636 3183295 3905989 4456613 6366590 7811978 8913226 12733180 15623956 17826452 19529945 22283065 27341923 39059890 44566130 54683846 78119780 89132260 109367692 136709615 144521593 273419230 289043186 546838460 578086372 722607965 1011651151 1445215930 2023302302 2890431860 4046604604 5058255755 10116511510 20233023020