1428000247 has 2 divisors, whose sum is σ = 1428000248. Its totient is φ = 1428000246.

The previous prime is 1428000229. The next prime is 1428000269. The reversal of 1428000247 is 7420008241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428000247 is a prime.

It is a super-2 number, since 2×1428000247² = 4078369410864122018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428000227) 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, 714000123 + 714000124.

It is an arithmetic number, because the mean of its divisors is an integer number (714000124).

Almost surely, 2^1428000247 is an apocalyptic number.

1428000247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428000247 is an equidigital number, since it uses as much as digits as its factorization.

1428000247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1428000247 is about 37788.8905235388. The cubic root of 1428000247 is about 1126.0977589596.

Adding to 1428000247 its reverse (7420008241), we get a palindrome (8848008488).

The spelling of 1428000247 in words is "one billion, four hundred twenty-eight million, two hundred forty-seven", and thus it is an aban number.