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3681071080 = 235197467141
BaseRepresentation
bin1101101101101000…
…1010111111101000
3100111112120210012221
43123122022333220
530014323233310
61405134043424
7160135405441
oct33332127750
910445523187
103681071080
111619961205
12868949574
13468826b8b
1426cc542c8
15168277ada
hexdb68afe8

3681071080 has 32 divisors (see below), whose sum is σ = 8324470440. Its totient is φ = 1464951040.

The previous prime is 3681071071. The next prime is 3681071083. The reversal of 3681071080 is 801701863.

It can be written as a sum of positive squares in 4 ways, for example, as 3668240356 + 12830724 = 60566^2 + 3582^2 .

It is not an unprimeable number, because it can be changed into a prime (3681071083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225691 + ... + 241450.

Almost surely, 23681071080 is an apocalyptic number.

It is an amenable number.

3681071080 is an abundant number, since it is smaller than the sum of its proper divisors (4643399360).

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

3681071080 is a wasteful number, since it uses less digits than its factorization.

3681071080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467349 (or 467345 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 3681071080 is about 60671.8310256086. The cubic root of 3681071080 is about 1544.0382964988.

The spelling of 3681071080 in words is "three billion, six hundred eighty-one million, seventy-one thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 197 394 788 985 1576 1970 3940 7880 467141 934282 1868564 2335705 3737128 4671410 9342820 18685640 92026777 184053554 368107108 460133885 736214216 920267770 1840535540 3681071080