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118028020 = 22511536491
BaseRepresentation
bin1110000100011…
…11011011110100
322020002110000011
413002033123310
5220203344040
615413430004
72632136005
oct702173364
9266073004
10118028020
1160695220
123363b304
131b5b6486
14119651ac
15a5663ea
hex708f6f4

118028020 has 24 divisors (see below), whose sum is σ = 270391968. Its totient is φ = 42919200.

The previous prime is 118028011. The next prime is 118028033. The reversal of 118028020 is 20820811.

It is a super-2 number, since 2×1180280202 = 27861227010240800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 118027982 and 118028000.

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, 268026 + ... + 268465.

It is an arithmetic number, because the mean of its divisors is an integer number (11266332).

Almost surely, 2118028020 is an apocalyptic number.

118028020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118028020 is an abundant number, since it is smaller than the sum of its proper divisors (152363948).

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

118028020 is a wasteful number, since it uses less digits than its factorization.

118028020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536511 (or 536509 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 118028020 is about 10864.0701396852. The cubic root of 118028020 is about 490.5256333581.

Adding to 118028020 its reverse (20820811), we get a palindrome (138848831).

The spelling of 118028020 in words is "one hundred eighteen million, twenty-eight thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 536491 1072982 2145964 2682455 5364910 5901401 10729820 11802802 23605604 29507005 59014010 118028020