28670003 has 2 divisors, whose sum is σ = 28670004. Its totient is φ = 28670002.

The previous prime is 28669967. The next prime is 28670023. The reversal of 28670003 is 30007682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28670003 - 2¹⁰ = 28668979 is a prime.

It is not a weakly prime, because it can be changed into another prime (28670023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14335001 + 14335002.

It is an arithmetic number, because the mean of its divisors is an integer number (14335002).

Almost surely, 2^28670003 is an apocalyptic number.

28670003 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670003 is an equidigital number, since it uses as much as digits as its factorization.

28670003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 28670003 is about 5354.4376922325. The cubic root of 28670003 is about 306.0618831940.

Adding to 28670003 its reverse (30007682), we get a palindrome (58677685).

The spelling of 28670003 in words is "twenty-eight million, six hundred seventy thousand, three".