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28030250303 = 1113918332407
BaseRepresentation
bin11010000110101110…
…111010110100111111
32200100110212020202122
4122012232322310333
5424401221002203
620513225313155
72011421124236
oct320656726477
980313766678
1028030250303
1110984388a20
1255233357bb
13284927c933
1414dc9c5b1d
15ae0c3e538
hex686bbad3f

28030250303 has 8 divisors (see below), whose sum is σ = 30798445440. Its totient is φ = 25298720280.

The previous prime is 28030250293. The next prime is 28030250317. The reversal of 28030250303 is 30305203082.

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 28030250303 - 212 = 28030246207 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 (28030250323) 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, 9164675 + ... + 9167732.

It is an arithmetic number, because the mean of its divisors is an integer number (3849805680).

Almost surely, 228030250303 is an apocalyptic number.

28030250303 is a deficient number, since it is larger than the sum of its proper divisors (2768195137).

28030250303 is a wasteful number, since it uses less digits than its factorization.

28030250303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332557.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 28030250303 its reverse (30305203082), we get a palindrome (58335453385).

The spelling of 28030250303 in words is "twenty-eight billion, thirty million, two hundred fifty thousand, three hundred three".

Divisors: 1 11 139 1529 18332407 201656477 2548204573 28030250303