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220615230 = 23511668531
BaseRepresentation
bin11010010011001…
…01001000111110
3120101010102012110
431021211020332
5422434141410
633520314450
75316125043
oct1511451076
9511112173
10220615230
11103593540
1261a72a26
1336924774
142142b1ca
151457c720
hexd26523e

220615230 has 32 divisors (see below), whose sum is σ = 577611648. Its totient is φ = 53482400.

The previous prime is 220615217. The next prime is 220615249. The reversal of 220615230 is 32516022.

220615230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220615197 and 220615206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333936 + ... + 334595.

It is an arithmetic number, because the mean of its divisors is an integer number (18050364).

Almost surely, 2220615230 is an apocalyptic number.

220615230 is an abundant number, since it is smaller than the sum of its proper divisors (356996418).

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

220615230 is a wasteful number, since it uses less digits than its factorization.

220615230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668552.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 220615230 is about 14853.1218940666. The cubic root of 220615230 is about 604.2432813080.

The spelling of 220615230 in words is "two hundred twenty million, six hundred fifteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 668531 1337062 2005593 3342655 4011186 6685310 7353841 10027965 14707682 20055930 22061523 36769205 44123046 73538410 110307615 220615230