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28658682461 = 347111773939
BaseRepresentation
bin11010101100001100…
…001100101001011101
32201222021100220121202
4122230030030221131
5432143110314321
621055435005245
72033121532043
oct325414145135
981867326552
1028658682461
1111177096342
125679899825
132919521996
14155c250393
15b2aec670b
hex6ac30ca5d

28658682461 has 8 divisors (see below), whose sum is σ = 28767392160. Its totient is φ = 28550123568.

The previous prime is 28658682419. The next prime is 28658682497. The reversal of 28658682461 is 16428685682.

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 28658682461 - 210 = 28658681437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28658682397 and 28658682406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28658682061) 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 7 ways as a sum of consecutive naturals, for example, 350630 + ... + 424568.

It is an arithmetic number, because the mean of its divisors is an integer number (3595924020).

Almost surely, 228658682461 is an apocalyptic number.

It is an amenable number.

28658682461 is a deficient number, since it is larger than the sum of its proper divisors (108709699).

28658682461 is a wasteful number, since it uses less digits than its factorization.

28658682461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75403.

The product of its digits is 8847360, while the sum is 56.

The spelling of 28658682461 in words is "twenty-eight billion, six hundred fifty-eight million, six hundred eighty-two thousand, four hundred sixty-one".

Divisors: 1 347 1117 73939 387599 25656833 82589863 28658682461