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70088660 = 22519717789
BaseRepresentation
bin1000010110101…
…11011111010100
311212212212120022
410023113133110
5120420314120
610542124312
71510513055
oct413273724
9155785508
1070088660
1136621714
121b580698
131169cca5
14944672c
156247025
hex42d77d4

70088660 has 24 divisors (see below), whose sum is σ = 147941640. Its totient is φ = 27891584.

The previous prime is 70088653. The next prime is 70088699. The reversal of 70088660 is 6688007.

It can be written as a sum of positive squares in 4 ways, for example, as 47087044 + 23001616 = 6862^2 + 4796^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70088660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4955 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (6164235).

Almost surely, 270088660 is an apocalyptic number.

It is an amenable number.

70088660 is an abundant number, since it is smaller than the sum of its proper divisors (77852980).

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

70088660 is a wasteful number, since it uses less digits than its factorization.

70088660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17995 (or 17993 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 70088660 is about 8371.8970371117. The cubic root of 70088660 is about 412.3024533131.

The spelling of 70088660 in words is "seventy million, eighty-eight thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 197 394 788 985 1970 3940 17789 35578 71156 88945 177890 355780 3504433 7008866 14017732 17522165 35044330 70088660