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20210382930 = 23510319333889
BaseRepresentation
bin10010110100101000…
…011111100001010010
31221011111101211101010
4102310220133201102
5312342324223210
613141242351350
71313555264133
oct226450374122
957144354333
1020210382930
118631263911
123b004bb556
131ba1158b8a
14d9a20bc8a
157d4476920
hex4b4a1f852

20210382930 has 64 divisors (see below), whose sum is σ = 49231054080. Its totient is φ = 5309300736.

The previous prime is 20210382889. The next prime is 20210382937. The reversal of 20210382930 is 3928301202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20210382937) 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, 579426 + ... + 613314.

It is an arithmetic number, because the mean of its divisors is an integer number (769235220).

Almost surely, 220210382930 is an apocalyptic number.

20210382930 is an abundant number, since it is smaller than the sum of its proper divisors (29020671150).

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

20210382930 is a wasteful number, since it uses less digits than its factorization.

20210382930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34195.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 20210382930 in words is "twenty billion, two hundred ten million, three hundred eighty-two thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 103 193 206 309 386 515 579 618 965 1030 1158 1545 1930 2895 3090 5790 19879 33889 39758 59637 67778 99395 101667 119274 169445 198790 203334 298185 338890 508335 596370 1016670 3490567 6540577 6981134 10471701 13081154 17452835 19621731 20943402 32702885 34905670 39243462 52358505 65405770 98108655 104717010 196217310 673679431 1347358862 2021038293 3368397155 4042076586 6736794310 10105191465 20210382930