428787113 has 2 divisors, whose sum is σ = 428787114. Its totient is φ = 428787112.

The previous prime is 428787109. The next prime is 428787187. The reversal of 428787113 is 311787824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258823744 + 169963369 = 16088^2 + 13037^2 .

It is a cyclic number.

It is not a de Polignac number, because 428787113 - 2² = 428787109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (428787103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214393556 + 214393557.

It is an arithmetic number, because the mean of its divisors is an integer number (214393557).

Almost surely, 2^428787113 is an apocalyptic number.

It is an amenable number.

428787113 is a deficient number, since it is larger than the sum of its proper divisors (1).

428787113 is an equidigital number, since it uses as much as digits as its factorization.

428787113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 41.

The square root of 428787113 is about 20707.1753988805. The cubic root of 428787113 is about 754.0738980357.

The spelling of 428787113 in words is "four hundred twenty-eight million, seven hundred eighty-seven thousand, one hundred thirteen".