Base | Representation |
---|---|
bin | 11010010001100… |
… | …00111001001110 |
3 | 120100201112122112 |
4 | 31020300321032 |
5 | 422410314410 |
6 | 33511544022 |
7 | 5314244120 |
oct | 1510607116 |
9 | 510645575 |
10 | 220401230 |
11 | 103457785 |
12 | 6198b012 |
13 | 3687b23a |
14 | 213b3210 |
15 | 14539105 |
hex | d230e4e |
220401230 has 64 divisors (see below), whose sum is σ = 476720640. Its totient is φ = 71777664.
The previous prime is 220401221. The next prime is 220401239. The reversal of 220401230 is 32104022.
It is an interprime number because it is at equal distance from previous prime (220401221) and next prime (220401239).
It is a Harshad number since it is a multiple of its sum of digits (14).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (220401239) 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 31 ways as a sum of consecutive naturals, for example, 110381 + ... + 112359.
It is an arithmetic number, because the mean of its divisors is an integer number (7448760).
Almost surely, 2220401230 is an apocalyptic number.
220401230 is an abundant number, since it is smaller than the sum of its proper divisors (256319410).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220401230 is a wasteful number, since it uses less digits than its factorization.
220401230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2073.
The product of its (nonzero) digits is 96, while the sum is 14.
The square root of 220401230 is about 14845.9162735077. The cubic root of 220401230 is about 604.0478431614.
Adding to 220401230 its reverse (32104022), we get a palindrome (252505252).
The spelling of 220401230 in words is "two hundred twenty million, four hundred one thousand, two hundred thirty".
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