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20120001083 = 7213311018889
BaseRepresentation
bin10010101111001111…
…101101101000111011
31220221012022221210022
4102233033231220323
5312201210013313
613124253241055
71311410121200
oct225717555073
956835287708
1020120001083
118595241676
123a9619318b
131b885021b0
14d8c201ca7
157cb571c08
hex4af3eda3b

20120001083 has 24 divisors (see below), whose sum is σ = 26018375040. Its totient is φ = 15405586560.

The previous prime is 20120001079. The next prime is 20120001103. The reversal of 20120001083 is 38010002102.

It is not a de Polignac number, because 20120001083 - 22 = 20120001079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120001073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489698 + ... + 529191.

It is an arithmetic number, because the mean of its divisors is an integer number (1084098960).

Almost surely, 220120001083 is an apocalyptic number.

20120001083 is a deficient number, since it is larger than the sum of its proper divisors (5898373957).

20120001083 is a wasteful number, since it uses less digits than its factorization.

20120001083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018947 (or 1018940 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20120001083 its reverse (38010002102), we get a palindrome (58130003185).

The spelling of 20120001083 in words is "twenty billion, one hundred twenty million, one thousand, eighty-three".

Divisors: 1 7 13 31 49 91 217 403 637 1519 2821 19747 1018889 7132223 13245557 31585559 49925561 92718899 221098913 410612267 649032293 1547692391 2874285869 20120001083