Base | Representation |
---|---|
bin | 101100011001… |
… | …1100111010001 |
3 | 1121210202021020 |
4 | 1120303213101 |
5 | 21424430311 |
6 | 2150550053 |
7 | 401606646 |
oct | 130634721 |
9 | 47722236 |
10 | 23280081 |
11 | 12160740 |
12 | 7968329 |
13 | 4a913c6 |
14 | 313ddcd |
15 | 209cc06 |
hex | 16339d1 |
23280081 has 16 divisors (see below), whose sum is σ = 34043328. Its totient is φ = 14033600.
The previous prime is 23280079. The next prime is 23280083. The reversal of 23280081 is 18008232.
It is an interprime number because it is at equal distance from previous prime (23280079) and next prime (23280083).
It is a cyclic number.
It is not a de Polignac number, because 23280081 - 21 = 23280079 is a prime.
It is a super-2 number, since 2×232800812 = 1083924342733122, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (23280083) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4711 + ... + 8291.
It is an arithmetic number, because the mean of its divisors is an integer number (2127708).
Almost surely, 223280081 is an apocalyptic number.
It is an amenable number.
23280081 is a deficient number, since it is larger than the sum of its proper divisors (10763247).
23280081 is a wasteful number, since it uses less digits than its factorization.
23280081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3792.
The product of its (nonzero) digits is 768, while the sum is 24.
The square root of 23280081 is about 4824.9436266137. The cubic root of 23280081 is about 285.5364105106.
The spelling of 23280081 in words is "twenty-three million, two hundred eighty thousand, eighty-one".
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