Base | Representation |
---|---|
bin | 101100001001… |
… | …1110100011001 |
3 | 1121120010121211 |
4 | 1120103310121 |
5 | 21411243344 |
6 | 2144103121 |
7 | 400525162 |
oct | 130236431 |
9 | 47503554 |
10 | 23149849 |
11 | 12081908 |
12 | 7904aa1 |
13 | 4a47048 |
14 | 3108769 |
15 | 2074334 |
hex | 1613d19 |
23149849 has 4 divisors (see below), whose sum is σ = 23318964. Its totient is φ = 22980736.
The previous prime is 23149843. The next prime is 23149873. The reversal of 23149849 is 94894132.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 10497600 + 12652249 = 3240^2 + 3557^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-23149849 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (23149843) 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, 84352 + ... + 84625.
It is an arithmetic number, because the mean of its divisors is an integer number (5829741).
Almost surely, 223149849 is an apocalyptic number.
It is an amenable number.
23149849 is a deficient number, since it is larger than the sum of its proper divisors (169115).
23149849 is a wasteful number, since it uses less digits than its factorization.
23149849 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 169114.
The product of its digits is 62208, while the sum is 40.
The square root of 23149849 is about 4811.4289977095. The cubic root of 23149849 is about 285.0029711396.
The spelling of 23149849 in words is "twenty-three million, one hundred forty-nine thousand, eight hundred forty-nine".
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