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488678766820 = 225149916300159
BaseRepresentation
bin1110001110001111000…
…01100011100011100100
31201201100212022110220221
413013013201203203210
531001303231014240
61012255041534124
750206625660536
oct7070741434344
91651325273827
10488678766820
1117927a473442
127a861644344
133710b7ccb2a
141991b813856
15caa1c8da4a
hex71c78638e4

488678766820 has 24 divisors (see below), whose sum is σ = 1026910080000. Its totient is φ = 195341093472.

The previous prime is 488678766809. The next prime is 488678766839. The reversal of 488678766820 is 28667876884.

It is a self number, because there is not a number n which added to its sum of digits gives 488678766820.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8120100 + ... + 8180059.

It is an arithmetic number, because the mean of its divisors is an integer number (42787920000).

Almost surely, 2488678766820 is an apocalyptic number.

It is an amenable number.

488678766820 is an abundant number, since it is smaller than the sum of its proper divisors (538231313180).

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

488678766820 is a wasteful number, since it uses less digits than its factorization.

488678766820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16301667 (or 16301665 counting only the distinct ones).

The product of its (nonzero) digits is 346816512, while the sum is 70.

The spelling of 488678766820 in words is "four hundred eighty-eight billion, six hundred seventy-eight million, seven hundred sixty-six thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 1499 2998 5996 7495 14990 29980 16300159 32600318 65200636 81500795 163001590 326003180 24433938341 48867876682 97735753364 122169691705 244339383410 488678766820