Base | Representation |
---|---|
bin | 1101001111000… |
… | …01010001110100 |
3 | 21201220120020010 |
4 | 12213201101310 |
5 | 211410220340 |
6 | 15003340220 |
7 | 2515452600 |
oct | 647412164 |
9 | 251816203 |
10 | 111023220 |
11 | 57740430 |
12 | 31221670 |
13 | 1a003019 |
14 | 10a60500 |
15 | 9b30b80 |
hex | 69e1474 |
111023220 has 144 divisors (see below), whose sum is σ = 394607808. Its totient is φ = 23063040.
The previous prime is 111023219. The next prime is 111023249. The reversal of 111023220 is 22320111.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 111023196 and 111023205.
It is a congruent number.
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 47 ways as a sum of consecutive naturals, for example, 30624 + ... + 34056.
It is an arithmetic number, because the mean of its divisors is an integer number (2740332).
Almost surely, 2111023220 is an apocalyptic number.
111023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 111023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197303904).
111023220 is an abundant number, since it is smaller than the sum of its proper divisors (283584588).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
111023220 is a wasteful number, since it uses less digits than its factorization.
111023220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3470 (or 3461 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 111023220 is about 10536.7556676617. The cubic root of 111023220 is about 480.6230624137.
Adding to 111023220 its reverse (22320111), we get a palindrome (133343331).
The spelling of 111023220 in words is "one hundred eleven million, twenty-three thousand, two hundred twenty".
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