Base | Representation |
---|---|
bin | 111100111110110… |
… | …100100100100100 |
3 | 2122022010221000210 |
4 | 330332310210210 |
5 | 4043403214340 |
6 | 245304335420 |
7 | 34232134251 |
oct | 7476644444 |
9 | 2568127023 |
10 | 1023101220 |
11 | 4855720a9 |
12 | 246774570 |
13 | 133c6804b |
14 | 99c42428 |
15 | 5ec46180 |
hex | 3cfb4924 |
1023101220 has 24 divisors (see below), whose sum is σ = 2864683584. Its totient is φ = 272826976.
The previous prime is 1023101207. The next prime is 1023101221. The reversal of 1023101220 is 221013201.
It is a super-2 number, since 2×10231012202 = 2093472212730976800, which contains 22 as substring.
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 = 1023101196 and 1023101205.
It is not an unprimeable number, because it can be changed into a prime (1023101221) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8525784 + ... + 8525903.
It is an arithmetic number, because the mean of its divisors is an integer number (119361816).
Almost surely, 21023101220 is an apocalyptic number.
1023101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1023101220 is an abundant number, since it is smaller than the sum of its proper divisors (1841582364).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1023101220 is a wasteful number, since it uses less digits than its factorization.
1023101220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17051699 (or 17051697 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 1023101220 is about 31985.9534796135. The cubic root of 1023101220 is about 1007.6418598876.
Adding to 1023101220 its reverse (221013201), we get a palindrome (1244114421).
The spelling of 1023101220 in words is "one billion, twenty-three million, one hundred one thousand, two hundred twenty".
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