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78848087 is a prime number
BaseRepresentation
bin1001011001100…
…10000001010111
312111100220020112
410230302001113
5130141114322
611453553235
71645124543
oct454620127
9174326215
1078848087
114056480a
12224a581b
1313448c96
14a686a23
156dc75e2
hex4b32057

78848087 has 2 divisors, whose sum is σ = 78848088. Its totient is φ = 78848086.

The previous prime is 78848041. The next prime is 78848137. The reversal of 78848087 is 78084887.

It is an a-pointer prime, because the next prime (78848137) can be obtained adding 78848087 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78848087 - 28 = 78847831 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78848587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39424043 + 39424044.

It is an arithmetic number, because the mean of its divisors is an integer number (39424044).

Almost surely, 278848087 is an apocalyptic number.

78848087 is a deficient number, since it is larger than the sum of its proper divisors (1).

78848087 is an equidigital number, since it uses as much as digits as its factorization.

78848087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 802816, while the sum is 50.

The square root of 78848087 is about 8879.6445311735. The cubic root of 78848087 is about 428.8088305914.

The spelling of 78848087 in words is "seventy-eight million, eight hundred forty-eight thousand, eighty-seven".