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30243395 = 571325113
BaseRepresentation
bin111001101011…
…1101001000011
32002220112010202
41303113221003
530220242040
63000115415
7515031110
oct163275103
962815122
1030243395
1116087346
12a165b6b
13635ba00
144033907
1529c6015
hex1cd7a43

30243395 has 24 divisors (see below), whose sum is σ = 44921376. Its totient is φ = 19139328.

The previous prime is 30243359. The next prime is 30243397. The reversal of 30243395 is 59334203.

It is not a de Polignac number, because 30243395 - 214 = 30227011 is a prime.

It is a super-2 number, since 2×302433952 = 1829325882252050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30243397) 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, 3359 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (1871724).

Almost surely, 230243395 is an apocalyptic number.

30243395 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30243395 is a deficient number, since it is larger than the sum of its proper divisors (14677981).

30243395 is a wasteful number, since it uses less digits than its factorization.

30243395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151 (or 5138 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 30243395 is about 5499.3995126741. The cubic root of 30243395 is about 311.5613047472.

Adding to 30243395 its reverse (59334203), we get a palindrome (89577598).

The spelling of 30243395 in words is "thirty million, two hundred forty-three thousand, three hundred ninety-five".

Divisors: 1 5 7 13 35 65 91 169 455 845 1183 5113 5915 25565 35791 66469 178955 332345 465283 864097 2326415 4320485 6048679 30243395