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20930220882 = 233947409289
BaseRepresentation
bin10011011111100010…
…011101001101010010
32000000122220101102000
4103133202131031102
5320331114032012
613340515134430
71340445641064
oct233742351522
960018811360
1020930220882
11897062280a
1240815a4416
131c873229ac
141027a6b734
15827766ddc
hex4df89d352

20930220882 has 32 divisors (see below), whose sum is σ = 46560830400. Its totient is φ = 6969356064.

The previous prime is 20930220847. The next prime is 20930220911. The reversal of 20930220882 is 28802203902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153507 + ... + 255782.

It is an arithmetic number, because the mean of its divisors is an integer number (1455025950).

Almost surely, 220930220882 is an apocalyptic number.

20930220882 is an abundant number, since it is smaller than the sum of its proper divisors (25630609518).

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

20930220882 is a wasteful number, since it uses less digits than its factorization.

20930220882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410247 (or 410241 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 20930220882 in words is "twenty billion, nine hundred thirty million, two hundred twenty thousand, eight hundred eighty-two".

Divisors: 1 2 3 6 9 18 27 54 947 1894 2841 5682 8523 17046 25569 51138 409289 818578 1227867 2455734 3683601 7367202 11050803 22101606 387596683 775193366 1162790049 2325580098 3488370147 6976740294 10465110441 20930220882