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20000930028 = 2231666744169
BaseRepresentation
bin10010101000001001…
…011111100011101100
31220121220021112000020
4102220021133203230
5311430214230103
613104401202140
71305433046232
oct225011374354
956556245006
1020000930028
118534004842
123a62330350
131b69942051
14d7a488952
157c0da1753
hex4a825f8ec

20000930028 has 12 divisors (see below), whose sum is σ = 46668836760. Its totient is φ = 6666976672.

The previous prime is 20000930017. The next prime is 20000930071. The reversal of 20000930028 is 82003900002.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833372073 + ... + 833372096.

It is an arithmetic number, because the mean of its divisors is an integer number (3889069730).

Almost surely, 220000930028 is an apocalyptic number.

It is an amenable number.

20000930028 is an abundant number, since it is smaller than the sum of its proper divisors (26667906732).

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

20000930028 is a wasteful number, since it uses less digits than its factorization.

20000930028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666744176 (or 1666744174 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 20000930028 in words is "twenty billion, nine hundred thirty thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 1666744169 3333488338 5000232507 6666976676 10000465014 20000930028