Search a number
-
+
30230115 = 353165011
BaseRepresentation
bin111001101010…
…0011001100011
32002212211220220
41303110121203
530214330430
62555534123
7514644306
oct163243143
962784826
1030230115
1116078373
12a15a343
136355956
14402cb3d
1529c2110
hex1cd4663

30230115 has 16 divisors (see below), whose sum is σ = 49929216. Its totient is φ = 15602400.

The previous prime is 30230111. The next prime is 30230117. The reversal of 30230115 is 51103203.

It is a happy number.

It is not a de Polignac number, because 30230115 - 22 = 30230111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 30230094 and 30230103.

It is not an unprimeable number, because it can be changed into a prime (30230111) 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, 32041 + ... + 32970.

It is an arithmetic number, because the mean of its divisors is an integer number (3120576).

Almost surely, 230230115 is an apocalyptic number.

30230115 is a deficient number, since it is larger than the sum of its proper divisors (19699101).

30230115 is a wasteful number, since it uses less digits than its factorization.

30230115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65050.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 30230115 is about 5498.1919755498. The cubic root of 30230115 is about 311.5156954510.

Adding to 30230115 its reverse (51103203), we get a palindrome (81333318).

The spelling of 30230115 in words is "thirty million, two hundred thirty thousand, one hundred fifteen".

Divisors: 1 3 5 15 31 93 155 465 65011 195033 325055 975165 2015341 6046023 10076705 30230115