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28055850055 = 513674104733
BaseRepresentation
bin11010001000010000…
…100100110001000111
32200102021000212000121
4122020100210301013
5424424244200210
620515542122411
72012151535132
oct321020446107
980367025017
1028055850055
1110997883442
12552ba20407
132851673b0c
14150216b219
15ae30e96da
hex688424c47

28055850055 has 8 divisors (see below), whose sum is σ = 33691656672. Its totient is φ = 22428255648.

The previous prime is 28055850037. The next prime is 28055850059. The reversal of 28055850055 is 55005855082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28055850055 - 233 = 19465915463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28055849993 and 28055850020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28055850059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2045532 + ... + 2059201.

It is an arithmetic number, because the mean of its divisors is an integer number (4211457084).

Almost surely, 228055850055 is an apocalyptic number.

28055850055 is a deficient number, since it is larger than the sum of its proper divisors (5635806617).

28055850055 is a wasteful number, since it uses less digits than its factorization.

28055850055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106105.

The product of its (nonzero) digits is 400000, while the sum is 43.

The spelling of 28055850055 in words is "twenty-eight billion, fifty-five million, eight hundred fifty thousand, fifty-five".

Divisors: 1 5 1367 6835 4104733 20523665 5611170011 28055850055