Base | Representation |
---|---|
bin | 100110100100… |
… | …0100010110000 |
3 | 1102001021201212 |
4 | 1031020202300 |
5 | 20134020310 |
6 | 2001215252 |
7 | 333603446 |
oct | 115104260 |
9 | 42037655 |
10 | 20220080 |
11 | 10460711 |
12 | 6931528 |
13 | 425c65a |
14 | 2984b96 |
15 | 1b96205 |
hex | 13488b0 |
20220080 has 40 divisors (see below), whose sum is σ = 47287152. Its totient is φ = 8040704.
The previous prime is 20220077. The next prime is 20220103. The reversal of 20220080 is 8002202.
It is a tau number, because it is divible by the number of its divisors (40).
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, 15119 + ... + 16401.
Almost surely, 220220080 is an apocalyptic number.
20220080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
20220080 is an abundant number, since it is smaller than the sum of its proper divisors (27067072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20220080 is a wasteful number, since it uses less digits than its factorization.
20220080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1493 (or 1487 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 14.
The square root of 20220080 is about 4496.6743266552. The cubic root of 20220080 is about 272.4337801666.
Adding to 20220080 its reverse (8002202), we get a palindrome (28222282).
The spelling of 20220080 in words is "twenty million, two hundred twenty thousand, eighty".
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