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78832340 = 2254196137
BaseRepresentation
bin1001011001011…
…10001011010100
312111100002122022
410230232023110
5130140113330
611453352312
71645030616
oct454561324
9174302568
1078832340
11405539a4
1222498698
1313441a72
14a680db6
156dc2ae5
hex4b2e2d4

78832340 has 24 divisors (see below), whose sum is σ = 169587432. Its totient is φ = 30763520.

The previous prime is 78832337. The next prime is 78832363. The reversal of 78832340 is 4323887.

78832340 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4251844 + 74580496 = 2062^2 + 8636^2 .

78832340 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 78832340.

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 7 ways as a sum of consecutive naturals, for example, 47249 + ... + 48888.

It is an arithmetic number, because the mean of its divisors is an integer number (7066143).

Almost surely, 278832340 is an apocalyptic number.

It is an amenable number.

78832340 is an abundant number, since it is smaller than the sum of its proper divisors (90755092).

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

78832340 is a wasteful number, since it uses less digits than its factorization.

78832340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96187 (or 96185 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78832340 is about 8878.7577959983. The cubic root of 78832340 is about 428.7802824364.

The spelling of 78832340 in words is "seventy-eight million, eight hundred thirty-two thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 96137 192274 384548 480685 961370 1922740 3941617 7883234 15766468 19708085 39416170 78832340