Base | Representation |
---|---|
bin | 100110101000… |
… | …0111110010000 |
3 | 1102010001002200 |
4 | 1031100332100 |
5 | 20141121413 |
6 | 2002043200 |
7 | 334106223 |
oct | 115207620 |
9 | 42101080 |
10 | 20254608 |
11 | 10484650 |
12 | 6949500 |
13 | 427229a |
14 | 29935ba |
15 | 1ba1573 |
hex | 1350f90 |
20254608 has 120 divisors (see below), whose sum is σ = 65189280. Its totient is φ = 5806080.
The previous prime is 20254607. The next prime is 20254609. The reversal of 20254608 is 80645202.
20254608 is a `hidden beast` number, since 2 + 0 + 2 + 54 + 608 = 666.
It is an interprime number because it is at equal distance from previous prime (20254607) and next prime (20254609).
It is not an unprimeable number, because it can be changed into a prime (20254607) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29760 + ... + 30432.
It is an arithmetic number, because the mean of its divisors is an integer number (543244).
Almost surely, 220254608 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20254608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32594640).
20254608 is an abundant number, since it is smaller than the sum of its proper divisors (44934672).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20254608 is a wasteful number, since it uses less digits than its factorization.
20254608 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 717 (or 708 counting only the distinct ones).
The product of its (nonzero) digits is 3840, while the sum is 27.
The square root of 20254608 is about 4500.5119708762. The cubic root of 20254608 is about 272.5887621511.
The spelling of 20254608 in words is "twenty million, two hundred fifty-four thousand, six hundred eight".
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