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30345345 = 3251036547
BaseRepresentation
bin111001111000…
…0100010000001
32010002200222200
41303300202001
530232022340
63002223413
7515634252
oct163604201
963080880
1030345345
11161469a8
12a1b4b69
136396234
14405cb29
1529e6330
hex1cf0881

30345345 has 24 divisors (see below), whose sum is σ = 53117376. Its totient is φ = 16024608.

The previous prime is 30345319. The next prime is 30345347. The reversal of 30345345 is 54354303.

It is a happy number.

It is not a de Polignac number, because 30345345 - 25 = 30345313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30345347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1362 + ... + 7908.

It is an arithmetic number, because the mean of its divisors is an integer number (2213224).

Almost surely, 230345345 is an apocalyptic number.

It is an amenable number.

30345345 is a deficient number, since it is larger than the sum of its proper divisors (22772031).

30345345 is a wasteful number, since it uses less digits than its factorization.

30345345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661 (or 6658 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 30345345 is about 5508.6609080611. The cubic root of 30345345 is about 311.9110014892.

Adding to 30345345 its reverse (54354303), we get a palindrome (84699648).

The spelling of 30345345 in words is "thirty million, three hundred forty-five thousand, three hundred forty-five".

Divisors: 1 3 5 9 15 45 103 309 515 927 1545 4635 6547 19641 32735 58923 98205 294615 674341 2023023 3371705 6069069 10115115 30345345