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20000212850 = 252400004257
BaseRepresentation
bin10010101000000110…
…110000011101110010
31220121211221002020002
4102220012300131302
5311430023302400
613104333550002
71305424001312
oct225006603562
956554832202
1020000212850
118533664a32
123a62045302
131b69750797
14d7a33d442
157c0caded5
hex4a81b0772

20000212850 has 12 divisors (see below), whose sum is σ = 37200395994. Its totient is φ = 8000085120.

The previous prime is 20000212849. The next prime is 20000212889. The reversal of 20000212850 is 5821200002.

It can be written as a sum of positive squares in 3 ways, for example, as 13721076769 + 6279136081 = 117137^2 + 79241^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200002079 + ... + 200002178.

Almost surely, 220000212850 is an apocalyptic number.

20000212850 is a deficient number, since it is larger than the sum of its proper divisors (17200183144).

20000212850 is a wasteful number, since it uses less digits than its factorization.

20000212850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400004269 (or 400004264 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20000212850 its reverse (5821200002), we get a palindrome (25821412852).

The spelling of 20000212850 in words is "twenty billion, two hundred twelve thousand, eight hundred fifty".

Divisors: 1 2 5 10 25 50 400004257 800008514 2000021285 4000042570 10000106425 20000212850