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78033332 = 221317412153
BaseRepresentation
bin1001010011010…
…11000110110100
312102211111121102
410221223012310
5124434031312
611424305232
71635162266
oct451530664
9172744542
1078033332
1140058663
1222172218
1313222190
14a513b36
156cb5ec2
hex4a6b1b4

78033332 has 48 divisors (see below), whose sum is σ = 159585552. Its totient is φ = 33054720.

The previous prime is 78033313. The next prime is 78033377. The reversal of 78033332 is 23333087.

It can be written as a sum of positive squares in 8 ways, for example, as 23775376 + 54257956 = 4876^2 + 7366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78033295 and 78033304.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35168 + ... + 37320.

It is an arithmetic number, because the mean of its divisors is an integer number (3324699).

Almost surely, 278033332 is an apocalyptic number.

It is an amenable number.

78033332 is an abundant number, since it is smaller than the sum of its proper divisors (81552220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78033332 is a wasteful number, since it uses less digits than its factorization.

78033332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2226 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 78033332 is about 8833.6477176759. The cubic root of 78033332 is about 427.3267211517.

The spelling of 78033332 in words is "seventy-eight million, thirty-three thousand, three hundred thirty-two".

Divisors: 1 2 4 13 17 26 34 41 52 68 82 164 221 442 533 697 884 1066 1394 2132 2153 2788 4306 8612 9061 18122 27989 36244 36601 55978 73202 88273 111956 146404 176546 353092 475813 951626 1147549 1500641 1903252 2295098 3001282 4590196 6002564 19508333 39016666 78033332