28818541 has 2 divisors, whose sum is σ = 28818542. Its totient is φ = 28818540.

The previous prime is 28818521. The next prime is 28818571. The reversal of 28818541 is 14581882.

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., 25502500 + 3316041 = 5050^2 + 1821^2 .

It is a cyclic number.

It is not a de Polignac number, because 28818541 - 2⁹ = 28818029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28818541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28818511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14409270 + 14409271.

It is an arithmetic number, because the mean of its divisors is an integer number (14409271).

Almost surely, 2^28818541 is an apocalyptic number.

It is an amenable number.

28818541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28818541 is an equidigital number, since it uses as much as digits as its factorization.

28818541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20480, while the sum is 37.

The square root of 28818541 is about 5368.2903237437. The cubic root of 28818541 is about 306.5895372874.

The spelling of 28818541 in words is "twenty-eight million, eight hundred eighteen thousand, five hundred forty-one".