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30768113 = 177324793
BaseRepresentation
bin111010101011…
…1101111110001
32010220011220202
41311113233301
530334034423
63015244545
7522344645
oct165275761
963804822
1030768113
11164055a2
12a379755
1364b37ac
14412cc25
152a7b728
hex1d57bf1

30768113 has 8 divisors (see below), whose sum is σ = 33025608. Its totient is φ = 28560384.

The previous prime is 30768103. The next prime is 30768119. The reversal of 30768113 is 31186703.

It can be written as a sum of positive squares in 4 ways, for example, as 18601969 + 12166144 = 4313^2 + 3488^2 .

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 30768113 - 24 = 30768097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30768119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11156 + ... + 13637.

It is an arithmetic number, because the mean of its divisors is an integer number (4128201).

Almost surely, 230768113 is an apocalyptic number.

It is an amenable number.

30768113 is a deficient number, since it is larger than the sum of its proper divisors (2257495).

30768113 is a wasteful number, since it uses less digits than its factorization.

30768113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24883.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 30768113 is about 5546.9012069803. The cubic root of 30768113 is about 313.3528295047.

The spelling of 30768113 in words is "thirty million, seven hundred sixty-eight thousand, one hundred thirteen".

Divisors: 1 17 73 1241 24793 421481 1809889 30768113