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118031080 = 23519315289
BaseRepresentation
bin1110000100100…
…00001011101000
322020002121012111
413002100023220
5220203443310
615413452104
72632150636
oct702201350
9266077174
10118031080
1160697552
1233641034
131b5b799b
1411966356
15a56728a
hex70902e8

118031080 has 32 divisors (see below), whose sum is σ = 266963400. Its totient is φ = 46964736.

The previous prime is 118031057. The next prime is 118031083. The reversal of 118031080 is 80130811.

It can be written as a sum of positive squares in 4 ways, for example, as 87272964 + 30758116 = 9342^2 + 5546^2 .

It is not an unprimeable number, because it can be changed into a prime (118031083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76 + ... + 15364.

Almost surely, 2118031080 is an apocalyptic number.

118031080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118031080 is an abundant number, since it is smaller than the sum of its proper divisors (148932320).

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

118031080 is a wasteful number, since it uses less digits than its factorization.

118031080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15493 (or 15489 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 118031080 is about 10864.2109699692. The cubic root of 118031080 is about 490.5298724517.

Adding to 118031080 its reverse (80130811), we get a palindrome (198161891).

The spelling of 118031080 in words is "one hundred eighteen million, thirty-one thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 193 386 772 965 1544 1930 3860 7720 15289 30578 61156 76445 122312 152890 305780 611560 2950777 5901554 11803108 14753885 23606216 29507770 59015540 118031080