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78034623 = 326011541
BaseRepresentation
bin1001010011010…
…11011010111111
312102211120101020
410221223122333
5124434101443
611424315223
71635166122
oct451533277
9172746336
1078034623
1140059627
1222172b13
1313222944
14a5143b9
156cb6583
hex4a6b6bf

78034623 has 4 divisors (see below), whose sum is σ = 104046168. Its totient is φ = 52023080.

The previous prime is 78034601. The next prime is 78034633. The reversal of 78034623 is 32643087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32643087 = 310881029.

It is a cyclic number.

It is not a de Polignac number, because 78034623 - 26 = 78034559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78034633) 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 3 ways as a sum of consecutive naturals, for example, 13005768 + ... + 13005773.

It is an arithmetic number, because the mean of its divisors is an integer number (26011542).

Almost surely, 278034623 is an apocalyptic number.

78034623 is a deficient number, since it is larger than the sum of its proper divisors (26011545).

78034623 is a wasteful number, since it uses less digits than its factorization.

78034623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26011544.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 78034623 is about 8833.7207902446. The cubic root of 78034623 is about 427.3290777333.

The spelling of 78034623 in words is "seventy-eight million, thirty-four thousand, six hundred twenty-three".

Divisors: 1 3 26011541 78034623