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28930877803983 = 319649178194309
BaseRepresentation
bin1101001001111111111101…
…01100011100110111001111
310210102202122121122221211010
412210333332230130313033
512243000414204211413
6141310354540100303
76044121056562621
oct644777654346717
9123382577587733
1028930877803983
119244575326231
1232b2bb8534693
13131b22985090c
14720394b4ac11
1535285a046dc3
hex1a4ffeb1cdcf

28930877803983 has 16 divisors (see below), whose sum is σ = 40610996841600. Its totient is φ = 18269318121120.

The previous prime is 28930877803967. The next prime is 28930877804011. The reversal of 28930877803983 is 38930877803982.

It is not a de Polignac number, because 28930877803983 - 24 = 28930877803967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930877803943) 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, 38727168 + ... + 39467141.

It is an arithmetic number, because the mean of its divisors is an integer number (2538187302600).

Almost surely, 228930877803983 is an apocalyptic number.

28930877803983 is a deficient number, since it is larger than the sum of its proper divisors (11680119037617).

28930877803983 is a wasteful number, since it uses less digits than its factorization.

28930877803983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78200822.

The product of its (nonzero) digits is 877879296, while the sum is 75.

Subtracting 28930877803983 from its reverse (38930877803982), we obtain a palindrome (9999999999999).

The spelling of 28930877803983 in words is "twenty-eight trillion, nine hundred thirty billion, eight hundred seventy-seven million, eight hundred three thousand, nine hundred eighty-three".

Divisors: 1 3 19 57 6491 19473 123329 369987 78194309 234582927 1485691871 4457075613 507559259719 1522677779157 9643625934661 28930877803983