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28285475141 = 7112315971471
BaseRepresentation
bin11010010101111100…
…100001100101000101
32201000021010000102102
4122111330201211011
5430412040201031
620554423521445
72020640400050
oct322574414505
981007100372
1028285475141
1110aa5460140
1255948b9285
13288a101551
141524861a97
15b083567cb
hex695f21945

28285475141 has 16 divisors (see below), whose sum is σ = 36798271488. Its totient is φ = 21082340400.

The previous prime is 28285475027. The next prime is 28285475209. The reversal of 28285475141 is 14157458282.

It is not a de Polignac number, because 28285475141 - 218 = 28285212997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285475341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7983965 + ... + 7987506.

It is an arithmetic number, because the mean of its divisors is an integer number (2299891968).

Almost surely, 228285475141 is an apocalyptic number.

It is an amenable number.

28285475141 is a deficient number, since it is larger than the sum of its proper divisors (8512796347).

28285475141 is a wasteful number, since it uses less digits than its factorization.

28285475141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15971512.

The product of its digits is 716800, while the sum is 47.

The spelling of 28285475141 in words is "twenty-eight billion, two hundred eighty-five million, four hundred seventy-five thousand, one hundred forty-one".

Divisors: 1 7 11 23 77 161 253 1771 15971471 111800297 175686181 367343833 1229803267 2571406831 4040782163 28285475141