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85789028 = 221319312801
BaseRepresentation
bin1010001110100…
…00100101100100
312222102112102102
411013100211210
5133430222103
612302431232
72061123533
oct507204544
9188375372
1085789028
1144475626
1224892518
1314a09350
14b57231a
1577e8e88
hex51d0964

85789028 has 48 divisors (see below), whose sum is σ = 175741440. Its totient is φ = 36288000.

The previous prime is 85789003. The next prime is 85789043. The reversal of 85789028 is 82098758.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29228 + ... + 32028.

It is an arithmetic number, because the mean of its divisors is an integer number (3661280).

Almost surely, 285789028 is an apocalyptic number.

It is an amenable number.

85789028 is an abundant number, since it is smaller than the sum of its proper divisors (89952412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85789028 is a wasteful number, since it uses less digits than its factorization.

85789028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 85789028 is about 9262.2366629233. The cubic root of 85789028 is about 441.0392582667.

The spelling of 85789028 in words is "eighty-five million, seven hundred eighty-nine thousand, twenty-eight".

Divisors: 1 2 4 13 19 26 31 38 52 62 76 124 247 403 494 589 806 988 1178 1612 2356 2801 5602 7657 11204 15314 30628 36413 53219 72826 86831 106438 145652 173662 212876 347324 691847 1128803 1383694 1649789 2257606 2767388 3299578 4515212 6599156 21447257 42894514 85789028