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67848496820 = 22513322181017
BaseRepresentation
bin111111001100000101…
…011110011010110100
320111010110220202100122
4333030011132122310
52102423203344240
651100312431112
74621230464426
oct771405363264
9214113822318
1067848496820
1126857786975
12111963a8498
136523796150
1433d8da0816
151b717c34b5
hexfcc15e6b4

67848496820 has 48 divisors (see below), whose sum is σ = 153491517648. Its totient is φ = 25043665920.

The previous prime is 67848496819. The next prime is 67848496841. The reversal of 67848496820 is 2869484876.

It can be written as a sum of positive squares in 8 ways, for example, as 2760241444 + 65088255376 = 52538^2 + 255124^2 .

It is a super-2 number, since 2×678484968202 (a number of 22 digits) contains 22 as substring.

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, 796952 + ... + 877968.

It is an arithmetic number, because the mean of its divisors is an integer number (3197739951).

Almost surely, 267848496820 is an apocalyptic number.

It is an amenable number.

67848496820 is an abundant number, since it is smaller than the sum of its proper divisors (85643020828).

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

67848496820 is a wasteful number, since it uses less digits than its factorization.

67848496820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84260 (or 84258 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 67848496820 in words is "sixty-seven billion, eight hundred forty-eight million, four hundred ninety-six thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 3221 6442 12884 16105 32210 41873 64420 81017 83746 162034 167492 209365 324068 405085 418730 810170 837460 1053221 1620340 2106442 4212884 5266105 10532210 21064420 260955757 521911514 1043823028 1304778785 2609557570 3392424841 5219115140 6784849682 13569699364 16962124205 33924248410 67848496820