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220630142 = 2409269719
BaseRepresentation
bin11010010011010…
…00110001111110
3120101011011122202
431021220301332
5422440131032
633520511502
75316216365
oct1511506176
9511134582
10220630142
111035a3767
1261a7b592
133692b4a5
14214327dc
1514581d62
hexd268c7e

220630142 has 8 divisors (see below), whose sum is σ = 331755600. Its totient is φ = 110044944.

The previous prime is 220630141. The next prime is 220630159. The reversal of 220630142 is 241036022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220630141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134042 + ... + 135677.

It is an arithmetic number, because the mean of its divisors is an integer number (41469450).

Almost surely, 2220630142 is an apocalyptic number.

220630142 is a deficient number, since it is larger than the sum of its proper divisors (111125458).

220630142 is a wasteful number, since it uses less digits than its factorization.

220630142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270130.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 220630142 is about 14853.6238675954. The cubic root of 220630142 is about 604.2568951653.

Adding to 220630142 its reverse (241036022), we get a palindrome (461666164).

The spelling of 220630142 in words is "two hundred twenty million, six hundred thirty thousand, one hundred forty-two".

Divisors: 1 2 409 818 269719 539438 110315071 220630142