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8666801052 = 2237137936631
BaseRepresentation
bin10000001001001010…
…01110001110011100
3211101000010002222120
420010211032032130
5120222200113202
63551555342540
7424525410360
oct100445161634
924330102876
108666801052
1137482019a8
12181a5b1a50
13a8172a460
145c307d2a0
1535ad110bc
hex20494e39c

8666801052 has 48 divisors (see below), whose sum is σ = 24889277952. Its totient is φ = 2285749440.

The previous prime is 8666801029. The next prime is 8666801053. The reversal of 8666801052 is 2501086668.

It is a super-2 number, since 2×86668010522 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 8666800995 and 8666801013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666801053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3967224 + ... + 3969407.

It is an arithmetic number, because the mean of its divisors is an integer number (518526624).

Almost surely, 28666801052 is an apocalyptic number.

It is an amenable number.

8666801052 is an abundant number, since it is smaller than the sum of its proper divisors (16222476900).

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

8666801052 is a wasteful number, since it uses less digits than its factorization.

8666801052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7936658 (or 7936656 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 8666801052 is about 93095.6553873488. The cubic root of 8666801052 is about 2054.0906660499.

The spelling of 8666801052 in words is "eight billion, six hundred sixty-six million, eight hundred one thousand, fifty-two".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 78 84 91 156 182 273 364 546 1092 7936631 15873262 23809893 31746524 47619786 55556417 95239572 103176203 111112834 166669251 206352406 222225668 309528609 333338502 412704812 619057218 666677004 722233421 1238114436 1444466842 2166700263 2888933684 4333400526 8666801052