28740541 has 2 divisors, whose sum is σ = 28740542. Its totient is φ = 28740540.

The previous prime is 28740539. The next prime is 28740553. The reversal of 28740541 is 14504782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 64516 = 5355^2 + 254^2 .

It is a cyclic number.

It is not a de Polignac number, because 28740541 - 2¹ = 28740539 is a prime.

Together with 28740539, it forms a pair of twin primes.

It is equal to p_1784623 and since 28740541 and 1784623 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28740571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14370270 + 14370271.

It is an arithmetic number, because the mean of its divisors is an integer number (14370271).

Almost surely, 2^28740541 is an apocalyptic number.

It is an amenable number.

28740541 is a deficient number, since it is larger than the sum of its proper divisors (1).

28740541 is an equidigital number, since it uses as much as digits as its factorization.

28740541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 28740541 is about 5361.0205185207. The cubic root of 28740541 is about 306.3126832124.

The spelling of 28740541 in words is "twenty-eight million, seven hundred forty thousand, five hundred forty-one".