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304828049 = 347878467
BaseRepresentation
bin10010001010110…
…100111010010001
3210020120212110202
4102022310322101
51111013444144
650125304545
710360665341
oct2212647221
9706525422
10304828049
11147081909
1286105155
134b1cb536
142c6acd21
151bb6464e
hex122b4e91

304828049 has 4 divisors (see below), whose sum is σ = 305706864. Its totient is φ = 303949236.

The previous prime is 304828033. The next prime is 304828061. The reversal of 304828049 is 940828403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940828403 = 1327708989.

It is a cyclic number.

It is not a de Polignac number, because 304828049 - 24 = 304828033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304828099) 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, 438887 + ... + 439580.

It is an arithmetic number, because the mean of its divisors is an integer number (76426716).

Almost surely, 2304828049 is an apocalyptic number.

It is an amenable number.

304828049 is a deficient number, since it is larger than the sum of its proper divisors (878815).

304828049 is an equidigital number, since it uses as much as digits as its factorization.

304828049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878814.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 304828049 is about 17459.3255597116. The cubic root of 304828049 is about 673.0050279764.

The spelling of 304828049 in words is "three hundred four million, eight hundred twenty-eight thousand, forty-nine".

Divisors: 1 347 878467 304828049