28529801 has 2 divisors, whose sum is σ = 28529802. Its totient is φ = 28529800.

The previous prime is 28529797. The next prime is 28529819. The reversal of 28529801 is 10892582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20939776 + 7590025 = 4576^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28529801 - 2² = 28529797 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28529101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14264900 + 14264901.

It is an arithmetic number, because the mean of its divisors is an integer number (14264901).

Almost surely, 2^28529801 is an apocalyptic number.

It is an amenable number.

28529801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28529801 is an equidigital number, since it uses as much as digits as its factorization.

28529801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 28529801 is about 5341.3295161411. The cubic root of 28529801 is about 305.5621666350.

The spelling of 28529801 in words is "twenty-eight million, five hundred twenty-nine thousand, eight hundred one".