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20411284684 = 2271290756479
BaseRepresentation
bin10011000000100110…
…110111110011001100
31221200111102200202211
4103000212313303030
5313300242102214
613213220400204
71321545025420
oct230046676314
957614380684
1020411284684
11872470231a
123b57846064
131c0396a75b
14db8b86b80
157e6e0d0c4
hex4c09b7ccc

20411284684 has 24 divisors (see below), whose sum is σ = 40826455040. Its totient is φ = 8746860816.

The previous prime is 20411284681. The next prime is 20411284697. The reversal of 20411284684 is 48648211402.

It is not an unprimeable number, because it can be changed into a prime (20411284681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333157 + ... + 389635.

Almost surely, 220411284684 is an apocalyptic number.

It is an amenable number.

20411284684 is an abundant number, since it is smaller than the sum of its proper divisors (20415170356).

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

20411284684 is a wasteful number, since it uses less digits than its factorization.

20411284684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69397 (or 69395 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 20411284684 in words is "twenty billion, four hundred eleven million, two hundred eighty-four thousand, six hundred eighty-four".

Divisors: 1 2 4 7 14 28 12907 25814 51628 56479 90349 112958 180698 225916 361396 395353 790706 1581412 728974453 1457948906 2915897812 5102821171 10205642342 20411284684