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68070005628 = 2235821974489
BaseRepresentation
bin111111011001010010…
…011101101101111100
320111200220201120022120
4333121102131231330
52103401410140003
651134304242540
74626560333622
oct773122355574
9214626646276
1068070005628
112696081a7a9
1211238610450
13655a641551
14341a581512
151b85e7a853
hexfd949db7c

68070005628 has 24 divisors (see below), whose sum is σ = 158857461840. Its totient is φ = 22686080640.

The previous prime is 68070005579. The next prime is 68070005659. The reversal of 68070005628 is 82650007086.

It is a self number, because there is not a number n which added to its sum of digits gives 68070005628.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417393 + ... + 557096.

It is an arithmetic number, because the mean of its divisors is an integer number (6619060910).

Almost surely, 268070005628 is an apocalyptic number.

It is an amenable number.

68070005628 is an abundant number, since it is smaller than the sum of its proper divisors (90787456212).

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

68070005628 is a wasteful number, since it uses less digits than its factorization.

68070005628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980317 (or 980315 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 68070005628 in words is "sixty-eight billion, seventy million, five thousand, six hundred twenty-eight".

Divisors: 1 2 3 4 6 12 5821 11642 17463 23284 34926 69852 974489 1948978 2923467 3897956 5846934 11693868 5672500469 11345000938 17017501407 22690001876 34035002814 68070005628