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30115430 = 253011543
BaseRepresentation
bin111001011100…
…0011001100110
32002200000121022
41302320121212
530202143210
62553251142
7513656042
oct162703146
962600538
1030115430
1115aaa194
12a103ab2
1363156a7
143ddd022
15299d155
hex1cb8666

30115430 has 8 divisors (see below), whose sum is σ = 54207792. Its totient is φ = 12046168.

The previous prime is 30115411. The next prime is 30115439. The reversal of 30115430 is 3451103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30115399 and 30115408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30115439) 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 3 ways as a sum of consecutive naturals, for example, 1505762 + ... + 1505781.

It is an arithmetic number, because the mean of its divisors is an integer number (6775974).

Almost surely, 230115430 is an apocalyptic number.

30115430 is a deficient number, since it is larger than the sum of its proper divisors (24092362).

30115430 is a wasteful number, since it uses less digits than its factorization.

30115430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011550.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30115430 is about 5487.7527276655. The cubic root of 30115430 is about 311.1212603926.

Adding to 30115430 its reverse (3451103), we get a palindrome (33566533).

The spelling of 30115430 in words is "thirty million, one hundred fifteen thousand, four hundred thirty".

Divisors: 1 2 5 10 3011543 6023086 15057715 30115430