28969541 has 2 divisors, whose sum is σ = 28969542. Its totient is φ = 28969540.

The previous prime is 28969517. The next prime is 28969553. The reversal of 28969541 is 14596982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 4218916 = 4975^2 + 2054^2 .

It is a cyclic number.

It is not a de Polignac number, because 28969541 - 2⁶ = 28969477 is a prime.

It is a Chen prime.

It is equal to p_1797884 and since 28969541 and 1797884 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 28969492 and 28969501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28969511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14484770 + 14484771.

It is an arithmetic number, because the mean of its divisors is an integer number (14484771).

Almost surely, 2^28969541 is an apocalyptic number.

It is an amenable number.

28969541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28969541 is an equidigital number, since it uses as much as digits as its factorization.

28969541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 28969541 is about 5382.3360170097. The cubic root of 28969541 is about 307.1240820170.

The spelling of 28969541 in words is "twenty-eight million, nine hundred sixty-nine thousand, five hundred forty-one".