28524019 has 2 divisors, whose sum is σ = 28524020. Its totient is φ = 28524018.

The previous prime is 28523993. The next prime is 28524031. The reversal of 28524019 is 91042582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28524019 - 2⁹ = 28523507 is a prime.

It is a super-2 number, since 2×28524019² = 1627239319824722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28524059) 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, 14262009 + 14262010.

It is an arithmetic number, because the mean of its divisors is an integer number (14262010).

Almost surely, 2^28524019 is an apocalyptic number.

28524019 is a deficient number, since it is larger than the sum of its proper divisors (1).

28524019 is an equidigital number, since it uses as much as digits as its factorization.

28524019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 28524019 is about 5340.7882377042. The cubic root of 28524019 is about 305.5415229601.

The spelling of 28524019 in words is "twenty-eight million, five hundred twenty-four thousand, nineteen".