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20387441076 = 22318150318661
BaseRepresentation
bin10010111111001011…
…111010100110110100
31221121211120022111020
4102333023322212310
5313223141103301
613211005341140
71321135250502
oct227713724664
957554508436
1020387441076
1187121a7262
123b4b8677b0
131bcba3ca02
14db593b672
157e4c9d436
hex4bf2fa9b4

20387441076 has 48 divisors (see below), whose sum is σ = 47931182208. Its totient is φ = 6744470400.

The previous prime is 20387441071. The next prime is 20387441089. The reversal of 20387441076 is 67014478302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20387441071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1083186 + ... + 1101846.

It is an arithmetic number, because the mean of its divisors is an integer number (998566296).

Almost surely, 220387441076 is an apocalyptic number.

It is an amenable number.

20387441076 is an abundant number, since it is smaller than the sum of its proper divisors (27543741132).

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

20387441076 is a wasteful number, since it uses less digits than its factorization.

20387441076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352 (or 19350 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 20387441076 in words is "twenty billion, three hundred eighty-seven million, four hundred forty-one thousand, seventy-six".

Divisors: 1 2 3 4 6 12 181 362 503 543 724 1006 1086 1509 2012 2172 3018 6036 18661 37322 55983 74644 91043 111966 182086 223932 273129 364172 546258 1092516 3377641 6755282 9386483 10132923 13510564 18772966 20265846 28159449 37545932 40531692 56318898 112637796 1698953423 3397906846 5096860269 6795813692 10193720538 20387441076