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220030512 = 243132315331
BaseRepresentation
bin11010001110101…
…10011000110000
3120100000201010020
431013112120300
5422311434022
633500003440
75311141242
oct1507263060
9510021106
10220030512
111032241a9
1261830580
133677b590
1421318092
15144b435c
hexd1d6630

220030512 has 80 divisors (see below), whose sum is σ = 638792448. Its totient is φ = 64753920.

The previous prime is 220030487. The next prime is 220030553. The reversal of 220030512 is 215030022.

It is a junction number, because it is equal to n+sod(n) for n = 220030491 and 220030500.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6687 + ... + 22017.

Almost surely, 2220030512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220030512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319396224).

220030512 is an abundant number, since it is smaller than the sum of its proper divisors (418761936).

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

220030512 is a wasteful number, since it uses less digits than its factorization.

220030512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378 (or 15372 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 220030512 is about 14833.4254978410. The cubic root of 220030512 is about 603.7089807486.

Adding to 220030512 its reverse (215030022), we get a palindrome (435060534).

The spelling of 220030512 in words is "two hundred twenty million, thirty thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 12 13 16 23 24 26 39 46 48 52 69 78 92 104 138 156 184 208 276 299 312 368 552 598 624 897 1104 1196 1794 2392 3588 4784 7176 14352 15331 30662 45993 61324 91986 122648 183972 199303 245296 352613 367944 398606 597909 705226 735888 797212 1057839 1195818 1410452 1594424 2115678 2391636 2820904 3188848 4231356 4583969 4783272 5641808 8462712 9167938 9566544 13751907 16925424 18335876 27503814 36671752 55007628 73343504 110015256 220030512