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30345814 = 222766841
BaseRepresentation
bin111001111000…
…0101001010110
32010002201122001
41303300221112
530232031224
63002225514
7515635522
oct163605126
963081561
1030345814
1116147294
12a1b529a
136396505
14405cd82
1529e6544
hex1cf0a56

30345814 has 8 divisors (see below), whose sum is σ = 45719928. Its totient is φ = 15105840.

The previous prime is 30345797. The next prime is 30345817. The reversal of 30345814 is 41854303.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30345817) 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, 32967 + ... + 33874.

It is an arithmetic number, because the mean of its divisors is an integer number (5714991).

Almost surely, 230345814 is an apocalyptic number.

30345814 is a deficient number, since it is larger than the sum of its proper divisors (15374114).

30345814 is a wasteful number, since it uses less digits than its factorization.

30345814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67070.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30345814 is about 5508.7034772258. The cubic root of 30345814 is about 311.9126083859.

The spelling of 30345814 in words is "thirty million, three hundred forty-five thousand, eight hundred fourteen".

Divisors: 1 2 227 454 66841 133682 15172907 30345814