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30043080 = 23325174909
BaseRepresentation
bin111001010011…
…0101111001000
32002112100100200
41302212233020
530142334310
62551532200
7513235104
oct162465710
962470320
1030043080
1115a5a8a1
12a08a060
1362bb792
143dc0904
1529869c0
hex1ca6bc8

30043080 has 96 divisors (see below), whose sum is σ = 103404600. Its totient is φ = 7538688.

The previous prime is 30043073. The next prime is 30043081. The reversal of 30043080 is 8034003.

It can be written as a sum of positive squares in 4 ways, for example, as 30008484 + 34596 = 5478^2 + 186^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30043081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3666 + ... + 8574.

Almost surely, 230043080 is an apocalyptic number.

30043080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30043080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51702300).

30043080 is an abundant number, since it is smaller than the sum of its proper divisors (73361520).

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

30043080 is a wasteful number, since it uses less digits than its factorization.

30043080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 30043080 is about 5481.1568122067. The cubic root of 30043080 is about 310.8719123213.

Adding to 30043080 its reverse (8034003), we get a palindrome (38077083).

It can be divided in two parts, 3004 and 3080, that added together give a square (6084 = 782).

The spelling of 30043080 in words is "thirty million, forty-three thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 30 34 36 40 45 51 60 68 72 85 90 102 120 136 153 170 180 204 255 306 340 360 408 510 612 680 765 1020 1224 1530 2040 3060 4909 6120 9818 14727 19636 24545 29454 39272 44181 49090 58908 73635 83453 88362 98180 117816 147270 166906 176724 196360 220905 250359 294540 333812 353448 417265 441810 500718 589080 667624 751077 834530 883620 1001436 1251795 1502154 1669060 1767240 2002872 2503590 3004308 3338120 3755385 5007180 6008616 7510770 10014360 15021540 30043080