28670429 has 2 divisors, whose sum is σ = 28670430. Its totient is φ = 28670428.

The previous prime is 28670413. The next prime is 28670459. The reversal of 28670429 is 92407682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27019204 + 1651225 = 5198^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 28670429 - 2⁴ = 28670413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28670392 and 28670401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28670459) 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, 14335214 + 14335215.

It is an arithmetic number, because the mean of its divisors is an integer number (14335215).

Almost surely, 2^28670429 is an apocalyptic number.

It is an amenable number.

28670429 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670429 is an equidigital number, since it uses as much as digits as its factorization.

28670429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28670429 is about 5354.4774721722. The cubic root of 28670429 is about 306.0633990840.

The spelling of 28670429 in words is "twenty-eight million, six hundred seventy thousand, four hundred twenty-nine".