28860001 has 2 divisors, whose sum is σ = 28860002. Its totient is φ = 28860000.

The previous prime is 28859981. The next prime is 28860019. The reversal of 28860001 is 10006882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15610401 + 13249600 = 3951^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 28860001 - 2¹⁵ = 28827233 is a prime.

It is not a weakly prime, because it can be changed into another prime (28860061) 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 as a sum of consecutive naturals, namely, 14430000 + 14430001.

It is an arithmetic number, because the mean of its divisors is an integer number (14430001).

Almost surely, 2^28860001 is an apocalyptic number.

It is an amenable number.

28860001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28860001 is an equidigital number, since it uses as much as digits as its factorization.

28860001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 28860001 is about 5372.1505004979. The cubic root of 28860001 is about 306.7364925803.

Adding to 28860001 its reverse (10006882), we get a palindrome (38866883).

The spelling of 28860001 in words is "twenty-eight million, eight hundred sixty thousand, one".