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20301905484 = 2232780563117
BaseRepresentation
bin10010111010000101…
…100111111001001100
31221101212121122201100
4102322011213321030
5313034241433414
613154312143100
71316046230550
oct227205477114
957355548640
1020301905484
118678995093
123b27097a90
131bb70c1b33
14da8433860
157dc504609
hex4ba167e4c

20301905484 has 36 divisors (see below), whose sum is σ = 58649949904. Its totient is φ = 5800544352.

The previous prime is 20301905471. The next prime is 20301905521. The reversal of 20301905484 is 48450910302.

20301905484 is a `hidden beast` number, since 20 + 3 + 0 + 1 + 90 + 548 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40281307 + ... + 40281810.

Almost surely, 220301905484 is an apocalyptic number.

It is an amenable number.

20301905484 is an abundant number, since it is smaller than the sum of its proper divisors (38348044420).

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

20301905484 is a wasteful number, since it uses less digits than its factorization.

20301905484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80563134 (or 80563129 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20301905484 in words is "twenty billion, three hundred one million, nine hundred five thousand, four hundred eighty-four".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 252 80563117 161126234 241689351 322252468 483378702 563941819 725068053 966757404 1127883638 1450136106 1691825457 2255767276 2900272212 3383650914 5075476371 6767301828 10150952742 20301905484