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304904069 = 678354829
BaseRepresentation
bin10010001011000…
…111011110000101
3210020201201202022
4102023013132011
51111023412234
650131052525
710361433101
oct2213073605
9706651668
10304904069
11147123a38
1286141145
134b227012
142c6cc901
151bb7be2e
hex122c7785

304904069 has 8 divisors (see below), whose sum is σ = 313188960. Its totient is φ = 296729136.

The previous prime is 304904063. The next prime is 304904081. The reversal of 304904069 is 960409403.

It is a happy number.

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 304904069 - 220 = 303855493 is a prime.

It is a super-2 number, since 2×3049040692 = 185932982585513522, 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 (304904063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21854 + ... + 32975.

It is an arithmetic number, because the mean of its divisors is an integer number (39148620).

Almost surely, 2304904069 is an apocalyptic number.

It is an amenable number.

304904069 is a deficient number, since it is larger than the sum of its proper divisors (8284891).

304904069 is an equidigital number, since it uses as much as digits as its factorization.

304904069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54979.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 304904069 is about 17461.5024840361. The cubic root of 304904069 is about 673.0609694489.

The spelling of 304904069 in words is "three hundred four million, nine hundred four thousand, sixty-nine".

Divisors: 1 67 83 5561 54829 3673543 4550807 304904069