28508801 has 2 divisors, whose sum is σ = 28508802. Its totient is φ = 28508800.

The previous prime is 28508783. The next prime is 28508807. The reversal of 28508801 is 10880582.

28508801 = 3775² + 3776².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14258176 + 14250625 = 3776^2 + 3775^2 .

It is a cyclic number.

It is not a de Polignac number, because 28508801 - 2²² = 24314497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28508807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14254400 + 14254401.

It is an arithmetic number, because the mean of its divisors is an integer number (14254401).

Almost surely, 2^28508801 is an apocalyptic number.

28508801 is the 3776-th centered square number.

It is an amenable number.

28508801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28508801 is an equidigital number, since it uses as much as digits as its factorization.

28508801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 28508801 is about 5339.3633515617. The cubic root of 28508801 is about 305.4871762702.

The spelling of 28508801 in words is "twenty-eight million, five hundred eight thousand, eight hundred one".