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388891029768 = 23331216861387
BaseRepresentation
bin1011010100010111011…
…01100011000100001000
31101011210111002012200220
411222023231203010020
522332422100423033
6454353140230040
740045040132463
oct5521355430410
91334714065626
10388891029768
1113aa2293666a
126345299b320
132a897c7c287
1414b72a482da
15a1b14d1bb3
hex5a8bb63108

388891029768 has 48 divisors (see below), whose sum is σ = 1004601497040. Its totient is φ = 125448711840.

The previous prime is 388891029731. The next prime is 388891029851. The reversal of 388891029768 is 867920198883.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8407630 + ... + 8453757.

It is an arithmetic number, because the mean of its divisors is an integer number (20929197855).

Almost surely, 2388891029768 is an apocalyptic number.

It is an amenable number.

388891029768 is an abundant number, since it is smaller than the sum of its proper divisors (615710467272).

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

388891029768 is a wasteful number, since it uses less digits than its factorization.

388891029768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16861458 (or 16861423 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 69.

The spelling of 388891029768 in words is "three hundred eighty-eight billion, eight hundred ninety-one million, twenty-nine thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 31 62 93 124 186 248 372 744 961 1922 2883 3844 5766 7688 11532 23064 16861387 33722774 50584161 67445548 101168322 134891096 202336644 404673288 522702997 1045405994 1568108991 2090811988 3136217982 4181623976 6272435964 12544871928 16203792907 32407585814 48611378721 64815171628 97222757442 129630343256 194445514884 388891029768