28899001 has 2 divisors, whose sum is σ = 28899002. Its totient is φ = 28899000.

The previous prime is 28898983. The next prime is 28899007. The reversal of 28899001 is 10099882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15023376 + 13875625 = 3876^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 28899001 - 2⁹ = 28898489 is a prime.

It is not a weakly prime, because it can be changed into another prime (28899007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14449500 + 14449501.

It is an arithmetic number, because the mean of its divisors is an integer number (14449501).

Almost surely, 2^28899001 is an apocalyptic number.

It is an amenable number.

28899001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28899001 is an equidigital number, since it uses as much as digits as its factorization.

28899001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 28899001 is about 5375.7791063250. The cubic root of 28899001 is about 306.8745999749.

The spelling of 28899001 in words is "twenty-eight million, eight hundred ninety-nine thousand, one".