28569461 has 2 divisors, whose sum is σ = 28569462. Its totient is φ = 28569460.

The previous prime is 28569449. The next prime is 28569479. The reversal of 28569461 is 16496582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14364100 + 14205361 = 3790^2 + 3769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28569461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28569161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14284730 + 14284731.

It is an arithmetic number, because the mean of its divisors is an integer number (14284731).

Almost surely, 2^28569461 is an apocalyptic number.

It is an amenable number.

28569461 is a deficient number, since it is larger than the sum of its proper divisors (1).

28569461 is an equidigital number, since it uses as much as digits as its factorization.

28569461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 28569461 is about 5345.0407856255. The cubic root of 28569461 is about 305.7036909825.

The spelling of 28569461 in words is "twenty-eight million, five hundred sixty-nine thousand, four hundred sixty-one".