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30230015 = 56046003
BaseRepresentation
bin111001101010…
…0010111111111
32002212211210012
41303110113333
530214330030
62555533435
7514644104
oct163242777
962784705
1030230015
1116078292
12a15a27b
1363558aa
14402caab
1529c2095
hex1cd45ff

30230015 has 4 divisors (see below), whose sum is σ = 36276024. Its totient is φ = 24184008.

The previous prime is 30229993. The next prime is 30230017. The reversal of 30230015 is 51003203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51003203 = 431186121.

It is a cyclic number.

It is not a de Polignac number, because 30230015 - 212 = 30225919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022997 + ... + 3023006.

It is an arithmetic number, because the mean of its divisors is an integer number (9069006).

Almost surely, 230230015 is an apocalyptic number.

30230015 is a deficient number, since it is larger than the sum of its proper divisors (6046009).

30230015 is an equidigital number, since it uses as much as digits as its factorization.

30230015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046008.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 30230015 is about 5498.1828816437. The cubic root of 30230015 is about 311.5153519569.

Adding to 30230015 its reverse (51003203), we get a palindrome (81233218).

The spelling of 30230015 in words is "thirty million, two hundred thirty thousand, fifteen".

Divisors: 1 5 6046003 30230015