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30030449 = 172936029
BaseRepresentation
bin111001010001…
…1101001110001
32002111201000212
41302203221301
530141433244
62551353505
7513153221
oct162435161
962451025
1030030449
1115a51359
12a082895
1362b5ac7
143dba081
152982d9e
hex1ca3a71

30030449 has 8 divisors (see below), whose sum is σ = 31910760. Its totient is φ = 28162816.

The previous prime is 30030439. The next prime is 30030461. The reversal of 30030449 is 94403003.

It can be written as a sum of positive squares in 4 ways, for example, as 23348224 + 6682225 = 4832^2 + 2585^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30030449 - 220 = 28981873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30030419) 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 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 7995.

It is an arithmetic number, because the mean of its divisors is an integer number (3988845).

Almost surely, 230030449 is an apocalyptic number.

It is an amenable number.

30030449 is a deficient number, since it is larger than the sum of its proper divisors (1880311).

30030449 is a wasteful number, since it uses less digits than its factorization.

30030449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6339.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30030449 is about 5480.0044708011. The cubic root of 30030449 is about 310.8283396301.

It can be divided in two parts, 300304 and 49, that multiplied together give a square (14714896 = 38362).

The spelling of 30030449 in words is "thirty million, thirty thousand, four hundred forty-nine".

Divisors: 1 17 293 4981 6029 102493 1766497 30030449