28238519 has 2 divisors, whose sum is σ = 28238520. Its totient is φ = 28238518.

The previous prime is 28238447. The next prime is 28238527. The reversal of 28238519 is 91583282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28238519 - 2¹⁶ = 28172983 is a prime.

It is a super-2 number, since 2×28238519² = 1594827910626722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28238569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14119259 + 14119260.

It is an arithmetic number, because the mean of its divisors is an integer number (14119260).

Almost surely, 2^28238519 is an apocalyptic number.

28238519 is a deficient number, since it is larger than the sum of its proper divisors (1).

28238519 is an equidigital number, since it uses as much as digits as its factorization.

28238519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 28238519 is about 5313.9927549819. The cubic root of 28238519 is about 304.5187034132.

The spelling of 28238519 in words is "twenty-eight million, two hundred thirty-eight thousand, five hundred nineteen".