28601603 has 2 divisors, whose sum is σ = 28601604. Its totient is φ = 28601602.

The previous prime is 28601567. The next prime is 28601647. The reversal of 28601603 is 30610682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28601603 - 2⁶ = 28601539 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28601203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300801 + 14300802.

It is an arithmetic number, because the mean of its divisors is an integer number (14300802).

Almost surely, 2^28601603 is an apocalyptic number.

28601603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601603 is an equidigital number, since it uses as much as digits as its factorization.

28601603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 28601603 is about 5348.0466527509. The cubic root of 28601603 is about 305.8182917381.

The spelling of 28601603 in words is "twenty-eight million, six hundred one thousand, six hundred three".