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28890141375 = 353611262957
BaseRepresentation
bin11010111001111111…
…001001001010111111
32202120101220020120010
4122321333021022333
5433131334011000
621134423554303
72041632102264
oct327177111277
982511806503
1028890141375
11112858058a7
1257232bb993
132955472014
141580ca126b
15b41496d50
hex6b9fc92bf

28890141375 has 32 divisors (see below), whose sum is σ = 48861319104. Its totient is φ = 15155472000.

The previous prime is 28890141361. The next prime is 28890141391. The reversal of 28890141375 is 57314109882.

It is not a de Polignac number, because 28890141375 - 210 = 28890140351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608604 + ... + 654353.

It is an arithmetic number, because the mean of its divisors is an integer number (1526916222).

Almost surely, 228890141375 is an apocalyptic number.

28890141375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28890141375 is a deficient number, since it is larger than the sum of its proper divisors (19971177729).

28890141375 is a wasteful number, since it uses less digits than its factorization.

28890141375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263036 (or 1263026 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 28890141375 in words is "twenty-eight billion, eight hundred ninety million, one hundred forty-one thousand, three hundred seventy-five".

Divisors: 1 3 5 15 25 61 75 125 183 305 375 915 1525 4575 7625 22875 1262957 3788871 6314785 18944355 31573925 77040377 94721775 157869625 231121131 385201885 473608875 1155605655 1926009425 5778028275 9630047125 28890141375