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20230955508 = 22319231150649
BaseRepresentation
bin10010110101110110…
…111110000111110100
31221012221010000122110
4102311312332013310
5312413111034013
613143255331020
71314225166401
oct226566760764
957187100573
1020230955508
118641935345
123b07380a70
131ba54acaba
14d9cc452a8
157d618c2c3
hex4b5dbe1f4

20230955508 has 72 divisors (see below), whose sum is σ = 51428294400. Its totient is φ = 6182593920.

The previous prime is 20230955483. The next prime is 20230955567. The reversal of 20230955508 is 80555903202.

It is a super-3 number, since 3×202309555083 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58968 + ... + 209616.

Almost surely, 220230955508 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 20230955508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25714147200).

20230955508 is an abundant number, since it is smaller than the sum of its proper divisors (31197338892).

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

20230955508 is a wasteful number, since it uses less digits than its factorization.

20230955508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150725 (or 150704 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 20230955508 in words is "twenty billion, two hundred thirty million, nine hundred fifty-five thousand, five hundred eight".

Divisors: 1 2 3 4 6 12 19 31 38 57 62 76 93 114 124 186 228 361 372 589 722 1083 1178 1444 1767 2166 2356 3534 4332 7068 11191 22382 33573 44764 67146 134292 150649 301298 451947 602596 903894 1807788 2862331 4670119 5724662 8586993 9340238 11449324 14010357 17173986 18680476 28020714 34347972 54384289 56041428 88732261 108768578 163152867 177464522 217537156 266196783 326305734 354929044 532393566 652611468 1064787132 1685912959 3371825918 5057738877 6743651836 10115477754 20230955508