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10304000221 = 78787130783
BaseRepresentation
bin10011001100010101…
…01001000011011101
3222121002210110000211
421212022221003131
5132100311001341
64422242252421
7513225361654
oct114612510335
928532713024
1010304000221
114408380969
121bb6957111
13c82988c68
146da69819b
1540490c181
hex2662a90dd

10304000221 has 4 divisors (see below), whose sum is σ = 10304209792. Its totient is φ = 10303790652.

The previous prime is 10304000197. The next prime is 10304000227. The reversal of 10304000221 is 12200040301.

10304000221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 10304000221 - 29 = 10303999709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10304000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13396 + ... + 144178.

It is an arithmetic number, because the mean of its divisors is an integer number (2576052448).

Almost surely, 210304000221 is an apocalyptic number.

It is an amenable number.

10304000221 is a deficient number, since it is larger than the sum of its proper divisors (209571).

10304000221 is an equidigital number, since it uses as much as digits as its factorization.

10304000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209570.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 10304000221 its reverse (12200040301), we get a palindrome (22504040522).

The spelling of 10304000221 in words is "ten billion, three hundred four million, two hundred twenty-one", and thus it is an aban number.

Divisors: 1 78787 130783 10304000221