Base | Representation |
---|---|
bin | 10010000000010111010001 |
3 | 22212210201211 |
4 | 102000113101 |
5 | 2202020311 |
6 | 245100121 |
7 | 55056112 |
oct | 22002721 |
9 | 8783654 |
10 | 4720081 |
11 | 27342a3 |
12 | 16b7641 |
13 | c93562 |
14 | 8ac209 |
15 | 633821 |
hex | 4805d1 |
4720081 has 4 divisors (see below), whose sum is σ = 4744000. Its totient is φ = 4696164.
The previous prime is 4720057. The next prime is 4720087. The reversal of 4720081 is 1800274.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 4720081 - 25 = 4720049 is a prime.
It is a super-2 number, since 2×47200812 = 44558329293122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (4720087) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11661 + ... + 12058.
It is an arithmetic number, because the mean of its divisors is an integer number (1186000).
Almost surely, 24720081 is an apocalyptic number.
It is an amenable number.
4720081 is a deficient number, since it is larger than the sum of its proper divisors (23919).
4720081 is a wasteful number, since it uses less digits than its factorization.
4720081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23918.
The product of its (nonzero) digits is 448, while the sum is 22.
The square root of 4720081 is about 2172.5747397961. The cubic root of 4720081 is about 167.7450900783.
The spelling of 4720081 in words is "four million, seven hundred twenty thousand, eighty-one".
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