Base | Representation |
---|---|
bin | 100110111101… |
… | …0100000000000 |
3 | 1102102200102112 |
4 | 1031322200000 |
5 | 20212042304 |
6 | 2005434452 |
7 | 335415146 |
oct | 115724000 |
9 | 42380375 |
10 | 20424704 |
11 | 10590423 |
12 | 6a0ba28 |
13 | 4301831 |
14 | 29d9596 |
15 | 1bd6b6e |
hex | 137a800 |
20424704 has 24 divisors (see below), whose sum is σ = 40843530. Its totient is φ = 10211328.
The previous prime is 20424661. The next prime is 20424707. The reversal of 20424704 is 40742402.
It can be written as a sum of positive squares in only one way, i.e., 19784704 + 640000 = 4448^2 + 800^2 .
It is a super-3 number, since 3×204247043 (a number of 23 digits) contains 333 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 20424704.
It is not an unprimeable number, because it can be changed into a prime (20424707) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2939 + ... + 7034.
Almost surely, 220424704 is an apocalyptic number.
It is an amenable number.
20424704 is a deficient number, since it is larger than the sum of its proper divisors (20418826).
20424704 is an frugal number, since it uses more digits than its factorization.
20424704 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9995 (or 9975 counting only the distinct ones).
The product of its (nonzero) digits is 1792, while the sum is 23.
The square root of 20424704 is about 4519.3698675811. The cubic root of 20424704 is about 273.3496929860.
The spelling of 20424704 in words is "twenty million, four hundred twenty-four thousand, seven hundred four".
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