28530043 has 2 divisors, whose sum is σ = 28530044. Its totient is φ = 28530042.

The previous prime is 28530037. The next prime is 28530119. The reversal of 28530043 is 34003582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28530043 - 2⁹ = 28529531 is a prime.

It is not a weakly prime, because it can be changed into another prime (28530023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14265021 + 14265022.

It is an arithmetic number, because the mean of its divisors is an integer number (14265022).

Almost surely, 2^28530043 is an apocalyptic number.

28530043 is a deficient number, since it is larger than the sum of its proper divisors (1).

28530043 is an equidigital number, since it uses as much as digits as its factorization.

28530043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 28530043 is about 5341.3521696290. The cubic root of 28530043 is about 305.5630305952.

The spelling of 28530043 in words is "twenty-eight million, five hundred thirty thousand, forty-three".