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28050003053 = 389306123557
BaseRepresentation
bin11010000111111010…
…010001010001101101
32200101212000210102222
4122013322101101231
5424421300044203
620515212525125
72012051043362
oct320772212155
980355023388
1028050003053
111099454a506
125529a807a5
1328503a7657
141501488469
15ae2842038
hex687e9146d

28050003053 has 8 divisors (see below), whose sum is σ = 28132492440. Its totient is φ = 27967567680.

The previous prime is 28050003013. The next prime is 28050003061. The reversal of 28050003053 is 35030005082.

It can be written as a sum of positive squares in 4 ways, for example, as 784728169 + 27265274884 = 28013^2 + 165122^2 .

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 28050003053 - 212 = 28049998957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28050003013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178951 + ... + 1202507.

It is an arithmetic number, because the mean of its divisors is an integer number (3516561555).

Almost surely, 228050003053 is an apocalyptic number.

It is an amenable number.

28050003053 is a deficient number, since it is larger than the sum of its proper divisors (82489387).

28050003053 is a wasteful number, since it uses less digits than its factorization.

28050003053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27007.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 28050003053 in words is "twenty-eight billion, fifty million, three thousand, fifty-three".

Divisors: 1 389 3061 23557 1190729 9163673 72107977 28050003053