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78030303 = 3138212437
BaseRepresentation
bin1001010011010…
…10010111011111
312102211100110020
410221222113133
5124433432203
611424243223
71635150411
oct451522737
9172740406
1078030303
114005635a
1222170513
13132209a0
14a5129b1
156cb5153
hex4a6a5df

78030303 has 16 divisors (see below), whose sum is σ = 112226016. Its totient is φ = 47940480.

The previous prime is 78030233. The next prime is 78030311. The reversal of 78030303 is 30303087.

It is not a de Polignac number, because 78030303 - 216 = 77964767 is a prime.

78030303 is a modest number, since divided by 30303 gives 78 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78030313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30801 + ... + 33237.

It is an arithmetic number, because the mean of its divisors is an integer number (7014126).

Almost surely, 278030303 is an apocalyptic number.

78030303 is a deficient number, since it is larger than the sum of its proper divisors (34195713).

78030303 is a wasteful number, since it uses less digits than its factorization.

78030303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 78030303 is about 8833.4762692838. The cubic root of 78030303 is about 427.3211919359.

The spelling of 78030303 in words is "seventy-eight million, thirty thousand, three hundred three".

Divisors: 1 3 13 39 821 2437 2463 7311 10673 31681 32019 95043 2000777 6002331 26010101 78030303