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78970351 is a prime number
BaseRepresentation
bin1001011010011…
…11110111101111
312111121002221211
410231033313233
5130204022401
611500335251
71646144155
oct455176757
9174532854
1078970351
1140638659
1222544527
131348c825
14a6b93d5
156ded951
hex4b4fdef

78970351 has 2 divisors, whose sum is σ = 78970352. Its totient is φ = 78970350.

The previous prime is 78970313. The next prime is 78970369. The reversal of 78970351 is 15307987.

It is a strong prime.

It is an emirp because it is prime and its reverse (15307987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78970351 - 211 = 78968303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78970751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39485175 + 39485176.

It is an arithmetic number, because the mean of its divisors is an integer number (39485176).

Almost surely, 278970351 is an apocalyptic number.

78970351 is a deficient number, since it is larger than the sum of its proper divisors (1).

78970351 is an equidigital number, since it uses as much as digits as its factorization.

78970351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 78970351 is about 8886.5263742364. The cubic root of 78970351 is about 429.0303570290.

The spelling of 78970351 in words is "seventy-eight million, nine hundred seventy thousand, three hundred fifty-one".