Base | Representation |
---|---|
bin | 10010101010100110… |
… | …11110001010100000 |
3 | 221212101110201221211 |
4 | 21111103132022200 |
5 | 131010400232430 |
6 | 4334214555504 |
7 | 503221651342 |
oct | 112523361240 |
9 | 27771421854 |
10 | 10021102240 |
11 | 4282718486 |
12 | 1b38068b94 |
13 | c391984c6 |
14 | 6b0c97292 |
15 | 3d9b7a72a |
hex | 2554de2a0 |
10021102240 has 48 divisors (see below), whose sum is σ = 23742822600. Its totient is φ = 3996933120.
The previous prime is 10021102219. The next prime is 10021102241. The reversal of 10021102240 is 4220112001.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 5701458064 + 4319644176 = 75508^2 + 65724^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 10021102240.
It is not an unprimeable number, because it can be changed into a prime (10021102241) 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, 33891 + ... + 145570.
Almost surely, 210021102240 is an apocalyptic number.
10021102240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
10021102240 is an abundant number, since it is smaller than the sum of its proper divisors (13721720360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10021102240 is a wasteful number, since it uses less digits than its factorization.
10021102240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 179825 (or 179817 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 13.
Adding to 10021102240 its reverse (4220112001), we get a palindrome (14241214241).
The spelling of 10021102240 in words is "ten billion, twenty-one million, one hundred two thousand, two hundred forty".
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