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28083556141 = 239444126459
BaseRepresentation
bin11010001001111010…
…010000111100101101
32200111012011110121221
4122021322100330231
5430003342244031
620522412023341
72012636200654
oct321172207455
980435143557
1028083556141
1110a01487433
125539161b51
132857324954
141505b0019b
15ae576da11
hex689e90f2d

28083556141 has 8 divisors (see below), whose sum is σ = 28208476800. Its totient is φ = 27958697760.

The previous prime is 28083556139. The next prime is 28083556159. The reversal of 28083556141 is 14165538082.

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 28083556141 - 21 = 28083556139 is a prime.

It is a super-3 number, since 3×280835561413 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083556441) 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, 1048170 + ... + 1074628.

It is an arithmetic number, because the mean of its divisors is an integer number (3526059600).

Almost surely, 228083556141 is an apocalyptic number.

It is an amenable number.

28083556141 is a deficient number, since it is larger than the sum of its proper divisors (124920659).

28083556141 is a wasteful number, since it uses less digits than its factorization.

28083556141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31139.

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 28083556141 in words is "twenty-eight billion, eighty-three million, five hundred fifty-six thousand, one hundred forty-one".

Divisors: 1 239 4441 26459 1061399 6323701 117504419 28083556141