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130628777 is a prime number
BaseRepresentation
bin1111100100100…
…11110010101001
3100002210121222212
413302103302221
5231420110102
620543454505
73144216626
oct762236251
9302717885
10130628777
1167811374
12378b7435
13210a8a46
14134c534d
15b704c52
hex7c93ca9

130628777 has 2 divisors, whose sum is σ = 130628778. Its totient is φ = 130628776.

The previous prime is 130628723. The next prime is 130628779. The reversal of 130628777 is 777826031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 61089856 = 8339^2 + 7816^2 .

It is an emirp because it is prime and its reverse (777826031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130628777 - 210 = 130627753 is a prime.

Together with 130628779, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130628779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65314388 + 65314389.

It is an arithmetic number, because the mean of its divisors is an integer number (65314389).

Almost surely, 2130628777 is an apocalyptic number.

It is an amenable number.

130628777 is a deficient number, since it is larger than the sum of its proper divisors (1).

130628777 is an equidigital number, since it uses as much as digits as its factorization.

130628777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 130628777 is about 11429.2946851501. The cubic root of 130628777 is about 507.3951211361.

The spelling of 130628777 in words is "one hundred thirty million, six hundred twenty-eight thousand, seven hundred seventy-seven".