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28828724925860 = 22517203323417023
BaseRepresentation
bin1101000111000001101011…
…11010001001010110100100
310210001222222102000001222122
412203200311322021112210
512234312212040111420
6141151422225245112
76033543451464536
oct643406572112644
9123058872001878
1028828724925860
119205214725a12
123297249793798
1313116c9ccabc2
14719463bd7856
1534ed7bcec725
hex1a3835e895a4

28828724925860 has 48 divisors (see below), whose sum is σ = 64101986758656. Its totient is φ = 10853087626752.

The previous prime is 28828724925821. The next prime is 28828724925971. The reversal of 28828724925860 is 6852942782882.

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, 68921309 + ... + 69338331.

It is an arithmetic number, because the mean of its divisors is an integer number (1335458057472).

Almost surely, 228828724925860 is an apocalyptic number.

28828724925860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28828724925860 is an abundant number, since it is smaller than the sum of its proper divisors (35273261832796).

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

28828724925860 is a wasteful number, since it uses less digits than its factorization.

28828724925860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620372 (or 620370 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 71.

The spelling of 28828724925860 in words is "twenty-eight trillion, eight hundred twenty-eight billion, seven hundred twenty-four million, nine hundred twenty-five thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 203323 406646 417023 813292 834046 1016615 1668092 2033230 2085115 3456491 4066460 4170230 6912982 7089391 8340460 13825964 14178782 17282455 28357564 34564910 35446955 69129820 70893910 141787820 84790367429 169580734858 339161469716 423951837145 847903674290 1441436246293 1695807348580 2882872492586 5765744985172 7207181231465 14414362462930 28828724925860