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30324473 = 31819533
BaseRepresentation
bin111001110101…
…1011011111001
32010001122100122
41303223123321
530230340343
63001543025
7515516354
oct163533371
963048318
1030324473
1116132253
12a1a4a75
13638989a
14405529b
1529e0068
hex1ceb6f9

30324473 has 4 divisors (see below), whose sum is σ = 30337188. Its totient is φ = 30311760.

The previous prime is 30324467. The next prime is 30324493. The reversal of 30324473 is 37442303.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37442303 = 191196033.

It can be written as a sum of positive squares in 2 ways, for example, as 3564544 + 26759929 = 1888^2 + 5173^2 .

It is a cyclic number.

It is not a de Polignac number, because 30324473 - 212 = 30320377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30324403) 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, 1586 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (7584297).

Almost surely, 230324473 is an apocalyptic number.

It is an amenable number.

30324473 is a deficient number, since it is larger than the sum of its proper divisors (12715).

30324473 is an equidigital number, since it uses as much as digits as its factorization.

30324473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12714.

The product of its (nonzero) digits is 6048, while the sum is 26.

The square root of 30324473 is about 5506.7661108858. The cubic root of 30324473 is about 311.8394726754.

Adding to 30324473 its reverse (37442303), we get a palindrome (67766776).

The spelling of 30324473 in words is "thirty million, three hundred twenty-four thousand, four hundred seventy-three".

Divisors: 1 3181 9533 30324473