Base | Representation |
---|---|
bin | 101100101101… |
… | …0001011000011 |
3 | 1122002202220210 |
4 | 1121122023003 |
5 | 22000004034 |
6 | 2154205203 |
7 | 403135263 |
oct | 131321303 |
9 | 48082823 |
10 | 23438019 |
11 | 12259370 |
12 | 7a23803 |
13 | 4b18267 |
14 | 31817a3 |
15 | 20ce8e9 |
hex | 165a2c3 |
23438019 has 32 divisors (see below), whose sum is σ = 37013760. Its totient is φ = 13030400.
The previous prime is 23437987. The next prime is 23438027. The reversal of 23438019 is 91083432.
It is a cyclic number.
It is not a de Polignac number, because 23438019 - 25 = 23437987 is a prime.
It is a super-2 number, since 2×234380192 = 1098681469288722, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (23438089) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22492 + ... + 23510.
It is an arithmetic number, because the mean of its divisors is an integer number (1156680).
Almost surely, 223438019 is an apocalyptic number.
23438019 is a deficient number, since it is larger than the sum of its proper divisors (13575741).
23438019 is a wasteful number, since it uses less digits than its factorization.
23438019 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1091.
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 23438019 is about 4841.2827845520. The cubic root of 23438019 is about 286.1806730021.
The spelling of 23438019 in words is "twenty-three million, four hundred thirty-eight thousand, nineteen".
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