28900801 has 2 divisors, whose sum is σ = 28900802. Its totient is φ = 28900800.

The previous prime is 28900793. The next prime is 28900829. The reversal of 28900801 is 10800982.

It is an a-pointer prime, because the next prime (28900829) can be obtained adding 28900801 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 331776 = 5345^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 28900801 - 2³ = 28900793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28900801.

It is not a weakly prime, because it can be changed into another prime (28900841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450400 + 14450401.

It is an arithmetic number, because the mean of its divisors is an integer number (14450401).

Almost surely, 2^28900801 is an apocalyptic number.

It is an amenable number.

28900801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28900801 is an equidigital number, since it uses as much as digits as its factorization.

28900801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 28900801 is about 5375.9465213114. The cubic root of 28900801 is about 306.8809711618.

The spelling of 28900801 in words is "twenty-eight million, nine hundred thousand, eight hundred one".