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78141230 = 257879929
BaseRepresentation
bin1001010100001…
…01011100101110
312110000222121122
410222011130232
5130001004410
611430500542
71636121666
oct452053456
9173028548
1078141230
1140121732
1222204752
131325c31b
14a5411a6
156cd7e55
hex4a8572e

78141230 has 16 divisors (see below), whose sum is σ = 140847120. Its totient is φ = 31213632.

The previous prime is 78141227. The next prime is 78141233. The reversal of 78141230 is 3214187.

It is an interprime number because it is at equal distance from previous prime (78141227) and next prime (78141233).

It is a super-2 number, since 2×781412302 = 12212103651825800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 78141230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78141233) by changing a digit.

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, 2906 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (8802945).

Almost surely, 278141230 is an apocalyptic number.

78141230 is a deficient number, since it is larger than the sum of its proper divisors (62705890).

78141230 is a wasteful number, since it uses less digits than its factorization.

78141230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10723.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 78141230 is about 8839.7528245987. The cubic root of 78141230 is about 427.5235877230.

The spelling of 78141230 in words is "seventy-eight million, one hundred forty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 787 1574 3935 7870 9929 19858 49645 99290 7814123 15628246 39070615 78141230