Base | Representation |
---|---|
bin | 100100010111110… |
… | …0101000010011110 |
3 | 10011001110101000022 |
4 | 1020233211002132 |
5 | 4444412311110 |
6 | 321034032142 |
7 | 42146333606 |
oct | 11057450236 |
9 | 3131411008 |
10 | 1220432030 |
11 | 5769a1714 |
12 | 2a0878652 |
13 | 165ac943c |
14 | b812bc06 |
15 | 72224755 |
hex | 48be509e |
1220432030 has 16 divisors (see below), whose sum is σ = 2197193040. Its totient is φ = 488080512.
The previous prime is 1220432009. The next prime is 1220432041. The reversal of 1220432030 is 302340221.
It is a super-3 number, since 3×12204320303 (a number of 28 digits) contains 333 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74657 + ... + 89523.
It is an arithmetic number, because the mean of its divisors is an integer number (137324565).
Almost surely, 21220432030 is an apocalyptic number.
1220432030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1220432030 is a deficient number, since it is larger than the sum of its proper divisors (976761010).
1220432030 is a wasteful number, since it uses less digits than its factorization.
1220432030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23083.
The product of its (nonzero) digits is 288, while the sum is 17.
The square root of 1220432030 is about 34934.6823371846. The cubic root of 1220432030 is about 1068.6558455636.
Adding to 1220432030 its reverse (302340221), we get a palindrome (1522772251).
The spelling of 1220432030 in words is "one billion, two hundred twenty million, four hundred thirty-two thousand, thirty".
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