28384523 has 2 divisors, whose sum is σ = 28384524. Its totient is φ = 28384522.

The previous prime is 28384493. The next prime is 28384529. The reversal of 28384523 is 32548382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28384523 - 2¹² = 28380427 is a prime.

It is a super-2 number, since 2×28384523² = 1611362291875058, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_1763855 and since 28384523 and 1763855 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28384529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14192261 + 14192262.

It is an arithmetic number, because the mean of its divisors is an integer number (14192262).

Almost surely, 2^28384523 is an apocalyptic number.

28384523 is a deficient number, since it is larger than the sum of its proper divisors (1).

28384523 is an equidigital number, since it uses as much as digits as its factorization.

28384523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

The square root of 28384523 is about 5327.7127362500. The cubic root of 28384523 is about 305.0426277426.

The spelling of 28384523 in words is "twenty-eight million, three hundred eighty-four thousand, five hundred twenty-three".