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20308234848 = 2531129716473
BaseRepresentation
bin10010111010011101…
…110001001001100000
31221102022112012222020
4102322131301021200
5313042402003343
613155055541440
71316154101526
oct227235611140
957368465866
1020308234848
118681518470
123b2922a880
131bb84c9a15
14da9200316
157dcd54b83
hex4ba771260

20308234848 has 96 divisors (see below), whose sum is σ = 58183961472. Its totient is φ = 6150988800.

The previous prime is 20308234823. The next prime is 20308234931. The reversal of 20308234848 is 84843280302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 3134140 + ... + 3140612.

It is an arithmetic number, because the mean of its divisors is an integer number (606082932).

Almost surely, 220308234848 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 20308234848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29091980736).

20308234848 is an abundant number, since it is smaller than the sum of its proper divisors (37875726624).

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

20308234848 is a wasteful number, since it uses less digits than its factorization.

20308234848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9468 (or 9460 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 20308234848 in words is "twenty billion, three hundred eight million, two hundred thirty-four thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 66 88 96 132 176 264 352 528 1056 2971 5942 6473 8913 11884 12946 17826 19419 23768 25892 32681 35652 38838 47536 51784 65362 71203 71304 77676 95072 98043 103568 130724 142406 142608 155352 196086 207136 213609 261448 284812 285216 310704 392172 427218 522896 569624 621408 784344 854436 1045792 1139248 1568688 1708872 2278496 3137376 3417744 6835488 19231283 38462566 57693849 76925132 115387698 153850264 211544113 230775396 307700528 423088226 461550792 615401056 634632339 846176452 923101584 1269264678 1692352904 1846203168 2538529356 3384705808 5077058712 6769411616 10154117424 20308234848