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82030757890 = 2519676443893
BaseRepresentation
bin100110001100101101…
…0100000100000000010
321211201212100021010011
41030121122200200002
52320444333223030
6101403455455134
75632540636354
oct1143132404002
9254655307104
1082030757890
1131875251594
1213a93b274aa
137973a8b0c3
143d8275d0d4
152201909b2a
hex13196a0802

82030757890 has 32 divisors (see below), whose sum is σ = 157746525120. Its totient is φ = 30621374784.

The previous prime is 82030757827. The next prime is 82030757929. The reversal of 82030757890 is 9875703028.

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, 3209217 + ... + 3234676.

It is an arithmetic number, because the mean of its divisors is an integer number (4929578910).

Almost surely, 282030757890 is an apocalyptic number.

82030757890 is a deficient number, since it is larger than the sum of its proper divisors (75715767230).

82030757890 is a wasteful number, since it uses less digits than its factorization.

82030757890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443986.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 82030757890 in words is "eighty-two billion, thirty million, seven hundred fifty-seven thousand, eight hundred ninety".

Divisors: 1 2 5 10 19 38 67 95 134 190 335 670 1273 2546 6365 12730 6443893 12887786 32219465 64438930 122433967 244867934 431740831 612169835 863481662 1224339670 2158704155 4317408310 8203075789 16406151578 41015378945 82030757890