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28748267716486 = 21711291704743933
BaseRepresentation
bin1101000100101011110100…
…10010001111111110000110
310202210022022012120100122011
412202111322102033332012
512232002423013411421
6141050434420124434
76024664605466153
oct642257222177606
9122708265510564
1028748267716486
11918408772974a
12328373483671a
131306c47243ac6
147155d044522a
1534cc1d6194e1
hex1a257a48ff86

28748267716486 has 32 divisors (see below), whose sum is σ = 45703176488640. Its totient is φ = 13515513209856.

The previous prime is 28748267716477. The next prime is 28748267716513. The reversal of 28748267716486 is 68461776284782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654344176 + ... + 654388108.

It is an arithmetic number, because the mean of its divisors is an integer number (1428224265270).

Almost surely, 228748267716486 is an apocalyptic number.

28748267716486 is a deficient number, since it is larger than the sum of its proper divisors (16954908772154).

28748267716486 is a wasteful number, since it uses less digits than its factorization.

28748267716486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62128.

The product of its digits is 2427715584, while the sum is 76.

The spelling of 28748267716486 in words is "twenty-eight trillion, seven hundred forty-eight billion, two hundred sixty-seven million, seven hundred sixteen thousand, four hundred eighty-six".

Divisors: 1 2 17 34 1129 2258 17047 19193 34094 38386 43933 87866 289799 579598 746861 1493722 19246063 38492126 49600357 99200714 327183071 654366142 748925851 843206069 1497851702 1686412138 12731739467 25463478934 845537285779 1691074571558 14374133858243 28748267716486