28945001 has 2 divisors, whose sum is σ = 28945002. Its totient is φ = 28945000.

The previous prime is 28944983. The next prime is 28945003. The reversal of 28945001 is 10054982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22080601 + 6864400 = 4699^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 28945001 - 2¹⁴ = 28928617 is a prime.

Together with 28945003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28945003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14472500 + 14472501.

It is an arithmetic number, because the mean of its divisors is an integer number (14472501).

Almost surely, 2^28945001 is an apocalyptic number.

It is an amenable number.

28945001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28945001 is an equidigital number, since it uses as much as digits as its factorization.

28945001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 28945001 is about 5380.0558547286. The cubic root of 28945001 is about 307.0373362620.

Adding to 28945001 its reverse (10054982), we get a palindrome (38999983).

The spelling of 28945001 in words is "twenty-eight million, nine hundred forty-five thousand, one".