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28758056060989 = 127618613660487
BaseRepresentation
bin1101000100111110000011…
…01101110100100000111101
310202211020120101001210000001
412202133001231310200331
512232132444322422424
6141055134002234301
76025462303160533
oct642370155644075
9122736511053001
1028758056060989
11918824aa1a862
123285606955991
131307b47125a28
14715c7c430153
1534d0e2b19844
hex1a27c1b7483d

28758056060989 has 8 divisors (see below), whose sum is σ = 28984973907968. Its totient is φ = 28531145658960.

The previous prime is 28758056060977. The next prime is 28758056061001. The reversal of 28758056060989 is 98906065085782.

It is an interprime number because it is at equal distance from previous prime (28758056060977) and next prime (28758056061001).

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 28758056060989 - 217 = 28758055929917 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 (28758056060189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6026104 + ... + 9686590.

It is an arithmetic number, because the mean of its divisors is an integer number (3623121738496).

Almost surely, 228758056060989 is an apocalyptic number.

It is an amenable number.

28758056060989 is a deficient number, since it is larger than the sum of its proper divisors (226917846979).

28758056060989 is a wasteful number, since it uses less digits than its factorization.

28758056060989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722475.

The product of its (nonzero) digits is 522547200, while the sum is 73.

The spelling of 28758056060989 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, sixty thousand, nine hundred eighty-nine".

Divisors: 1 127 61861 3660487 7856347 464881849 226441386307 28758056060989