Base | Representation |
---|---|
bin | 11011011101111… |
… | …11101001100100 |
3 | 121001120201010101 |
4 | 31232333221210 |
5 | 432442020030 |
6 | 34510433444 |
7 | 5465364403 |
oct | 1556775144 |
9 | 531521111 |
10 | 230423140 |
11 | 109082352 |
12 | 65202884 |
13 | 38979a6c |
14 | 2286163a |
15 | 153687ca |
hex | dbbfa64 |
230423140 has 24 divisors (see below), whose sum is σ = 494186112. Its totient is φ = 90207840.
The previous prime is 230423107. The next prime is 230423147. The reversal of 230423140 is 41324032.
It is not an unprimeable number, because it can be changed into a prime (230423147) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121626 + ... + 123505.
It is an arithmetic number, because the mean of its divisors is an integer number (20591088).
Almost surely, 2230423140 is an apocalyptic number.
230423140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
230423140 is an abundant number, since it is smaller than the sum of its proper divisors (263762972).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
230423140 is a wasteful number, since it uses less digits than its factorization.
230423140 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 245187 (or 245185 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 19.
The square root of 230423140 is about 15179.6949903481. The cubic root of 230423140 is about 613.0680688392.
Adding to 230423140 its reverse (41324032), we get a palindrome (271747172).
The spelling of 230423140 in words is "two hundred thirty million, four hundred twenty-three thousand, one hundred forty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •