1428730033 has 4 divisors (see below), whose sum is σ = 1429331968. Its totient is φ = 1428128100.

The previous prime is 1428730021. The next prime is 1428730057. The reversal of 1428730033 is 3300378241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3300378241 = 1291 ⋅2556451.

It is a cyclic number.

It is not a de Polignac number, because 1428730033 - 2⁵ = 1428730001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1428729977 and 1428730004.

It is not an unprimeable number, because it can be changed into a prime (1428730013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297393 + ... + 302158.

It is an arithmetic number, because the mean of its divisors is an integer number (357332992).

Almost surely, 2^1428730033 is an apocalyptic number.

It is an amenable number.

1428730033 is a deficient number, since it is larger than the sum of its proper divisors (601935).

1428730033 is an equidigital number, since it uses as much as digits as its factorization.

1428730033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601934.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1428730033 is about 37798.5453820646. The cubic root of 1428730033 is about 1126.2895587449.

The spelling of 1428730033 in words is "one billion, four hundred twenty-eight million, seven hundred thirty thousand, thirty-three".