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128300951 is a prime number
BaseRepresentation
bin1111010010110…
…11011110010111
322221102100211002
413221123132113
5230321112301
620421533515
73115353152
oct751333627
9287370732
10128300951
1166471449
1236b7429b
132077232c
141307ac99
15b3e516b
hex7a5b797

128300951 has 2 divisors, whose sum is σ = 128300952. Its totient is φ = 128300950.

The previous prime is 128300933. The next prime is 128300981. The reversal of 128300951 is 159003821.

It is a weak prime.

It is an emirp because it is prime and its reverse (159003821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-128300951 is a prime.

It is a super-2 number, since 2×1283009512 = 32922268055008802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128300981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64150475 + 64150476.

It is an arithmetic number, because the mean of its divisors is an integer number (64150476).

Almost surely, 2128300951 is an apocalyptic number.

128300951 is a deficient number, since it is larger than the sum of its proper divisors (1).

128300951 is an equidigital number, since it uses as much as digits as its factorization.

128300951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 128300951 is about 11327.0009711309. Note that the first 3 decimals coincide. The cubic root of 128300951 is about 504.3630842479.

The spelling of 128300951 in words is "one hundred twenty-eight million, three hundred thousand, nine hundred fifty-one".