1428733247 has 2 divisors, whose sum is σ = 1428733248. Its totient is φ = 1428733246.

The previous prime is 1428733231. The next prime is 1428733387. The reversal of 1428733247 is 7423378241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428733247 - 2⁴ = 1428733231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428733217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714366623 + 714366624.

It is an arithmetic number, because the mean of its divisors is an integer number (714366624).

Almost surely, 2^1428733247 is an apocalyptic number.

1428733247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428733247 is an equidigital number, since it uses as much as digits as its factorization.

1428733247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 41.

The square root of 1428733247 is about 37798.5878969043. The cubic root of 1428733247 is about 1126.2904032926.

The spelling of 1428733247 in words is "one billion, four hundred twenty-eight million, seven hundred thirty-three thousand, two hundred forty-seven".