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54689302020 = 223523101938891
BaseRepresentation
bin110010111011101111…
…001000011000000100
312020011101120101200110
4302323233020120010
51344000430131040
641042433313020
73644152253133
oct627357103004
9166141511613
1054689302020
112121475a071
12a723405770
135207426352
14290b43591a
1516513c7980
hexcbbbc8604

54689302020 has 96 divisors (see below), whose sum is σ = 159948794880. Its totient is φ = 13935687040.

The previous prime is 54689302001. The next prime is 54689302027. The reversal of 54689302020 is 2020398645.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 54689302020.

It is not an unprimeable number, because it can be changed into a prime (54689302027) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1386775 + ... + 1425665.

It is an arithmetic number, because the mean of its divisors is an integer number (1666133280).

Almost surely, 254689302020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54689302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79974397440).

54689302020 is an abundant number, since it is smaller than the sum of its proper divisors (105259492860).

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

54689302020 is a wasteful number, since it uses less digits than its factorization.

54689302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39945 (or 39943 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 54689302020 in words is "fifty-four billion, six hundred eighty-nine million, three hundred two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1019 1380 2038 3057 4076 5095 6114 10190 12228 15285 20380 23437 30570 38891 46874 61140 70311 77782 93748 116673 117185 140622 155564 194455 233346 234370 281244 351555 388910 466692 468740 583365 703110 777820 894493 1166730 1406220 1788986 2333460 2683479 3577972 4472465 5366958 8944930 10733916 13417395 17889860 26834790 39629929 53669580 79259858 118889787 158519716 198149645 237779574 396299290 475559148 594448935 792598580 911488367 1188897870 1822976734 2377795740 2734465101 3645953468 4557441835 5468930202 9114883670 10937860404 13672325505 18229767340 27344651010 54689302020