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30803434 = 289173053
BaseRepresentation
bin111010110000…
…0010111101010
32010221222100221
41311200113222
530341202214
63020120254
7522552634
oct165402752
963858327
1030803434
111642a092
12a39608a
1364c68ac
14413ba54
152a86e24
hex1d605ea

30803434 has 8 divisors (see below), whose sum is σ = 46724580. Its totient is φ = 15228576.

The previous prime is 30803431. The next prime is 30803449. The reversal of 30803434 is 43430803.

It can be written as a sum of positive squares in 2 ways, for example, as 30769209 + 34225 = 5547^2 + 185^2 .

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 = 30803399 and 30803408.

It is not an unprimeable number, because it can be changed into a prime (30803431) 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, 86349 + ... + 86704.

Almost surely, 230803434 is an apocalyptic number.

30803434 is a deficient number, since it is larger than the sum of its proper divisors (15921146).

30803434 is a wasteful number, since it uses less digits than its factorization.

30803434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173144.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 30803434 is about 5550.0841435063. The cubic root of 30803434 is about 313.4726906388.

The spelling of 30803434 in words is "thirty million, eight hundred three thousand, four hundred thirty-four".

Divisors: 1 2 89 178 173053 346106 15401717 30803434