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20122130308 = 2271753797611
BaseRepresentation
bin10010101111010111…
…110101011110000100
31220221100100010112111
4102233113311132010
5312202231132213
613124411030404
71311434166640
oct225727653604
956840303474
1020122130308
118596466365
123a96a3b404
131b88a993a7
14d8c5d7c20
157cb842a3d
hex4af5f5784

20122130308 has 48 divisors (see below), whose sum is σ = 43415616384. Its totient is φ = 7963338240.

The previous prime is 20122130299. The next prime is 20122130309. The reversal of 20122130308 is 80303122102.

It is not an unprimeable number, because it can be changed into a prime (20122130309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373578 + ... + 424033.

It is an arithmetic number, because the mean of its divisors is an integer number (904492008).

Almost surely, 220122130308 is an apocalyptic number.

20122130308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20122130308 is an abundant number, since it is smaller than the sum of its proper divisors (23293486076).

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

20122130308 is a wasteful number, since it uses less digits than its factorization.

20122130308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797692 (or 797690 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 20122130308 in words is "twenty billion, one hundred twenty-two million, one hundred thirty thousand, three hundred eight".

Divisors: 1 2 4 7 14 17 28 34 53 68 106 119 212 238 371 476 742 901 1484 1802 3604 6307 12614 25228 797611 1595222 3190444 5583277 11166554 13559387 22333108 27118774 42273383 54237548 84546766 94915709 169093532 189831418 295913681 379662836 591827362 718647511 1183654724 1437295022 2874590044 5030532577 10061065154 20122130308