75428029 has 2 divisors, whose sum is σ = 75428030. Its totient is φ = 75428028.

The previous prime is 75428011. The next prime is 75428039. The reversal of 75428029 is 92082457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71825625 + 3602404 = 8475^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 75428029 - 2¹⁷ = 75296957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75428009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37714014 + 37714015.

It is an arithmetic number, because the mean of its divisors is an integer number (37714015).

Almost surely, 2^75428029 is an apocalyptic number.

It is an amenable number.

75428029 is a deficient number, since it is larger than the sum of its proper divisors (1).

75428029 is an equidigital number, since it uses as much as digits as its factorization.

75428029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 75428029 is about 8684.9311453805. The cubic root of 75428029 is about 422.5170638394.

The spelling of 75428029 in words is "seventy-five million, four hundred twenty-eight thousand, twenty-nine".