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30394351 = 1317831657
BaseRepresentation
bin111001111110…
…0011111101111
32010012012012201
41303330133233
530240104401
63003242331
7516230161
oct163743757
963165181
1030394351
111617a7a9
12a2193a7
1363b2630
144072931
152a05b01
hex1cfc7ef

30394351 has 16 divisors (see below), whose sum is σ = 35096544. Its totient is φ = 26072064.

The previous prime is 30394333. The next prime is 30394391. The reversal of 30394351 is 15349303.

It is a cyclic number.

It is not a de Polignac number, because 30394351 - 211 = 30392303 is a prime.

It is a super-2 number, since 2×303943512 = 1847633145422402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30394321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17515 + ... + 19171.

It is an arithmetic number, because the mean of its divisors is an integer number (2193534).

Almost surely, 230394351 is an apocalyptic number.

30394351 is a deficient number, since it is larger than the sum of its proper divisors (4702193).

30394351 is a wasteful number, since it uses less digits than its factorization.

30394351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 30394351 is about 5513.1072001186. The cubic root of 30394351 is about 312.0788173382.

The spelling of 30394351 in words is "thirty million, three hundred ninety-four thousand, three hundred fifty-one".

Divisors: 1 13 17 83 221 1079 1411 1657 18343 21541 28169 137531 366197 1787903 2338027 30394351