Base | Representation |
---|---|
bin | 100110100001… |
… | …1101001000000 |
3 | 1102000021012011 |
4 | 1031003221000 |
5 | 20132400000 |
6 | 2000542304 |
7 | 333461062 |
oct | 115035100 |
9 | 42007164 |
10 | 20200000 |
11 | 10447617 |
12 | 6921994 |
13 | 4253482 |
14 | 297b732 |
15 | 1b902ba |
hex | 1343a40 |
20200000 has 84 divisors (see below), whose sum is σ = 50598324. Its totient is φ = 8000000.
The previous prime is 20199973. The next prime is 20200013. The reversal of 20200000 is 202.
It can be written as a sum of positive squares in 6 ways, for example, as 11343424 + 8856576 = 3368^2 + 2976^2 .
It is a Harshad number since it is a multiple of its sum of digits (4).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199950 + ... + 200050.
It is an arithmetic number, because the mean of its divisors is an integer number (602361).
Almost surely, 220200000 is an apocalyptic number.
20200000 is a gapful number since it is divisible by the number (20) 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 20200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25299162).
20200000 is an abundant number, since it is smaller than the sum of its proper divisors (30398324).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20200000 is an frugal number, since it uses more digits than its factorization.
20200000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 138 (or 108 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 4.
The square root of 20200000 is about 4494.4410108488. The cubic root of 20200000 is about 272.3435681569.
Adding to 20200000 its reverse (202), we get a palindrome (20200202).
20200000 divided by its reverse (202) gives a 5-th power (100000 = 105).
It can be divided in two parts, 20 and 200000, that multiplied together give a square (4000000 = 20002).
The spelling of 20200000 in words is "twenty million, two hundred thousand".
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