28985519 has 2 divisors, whose sum is σ = 28985520. Its totient is φ = 28985518.

The previous prime is 28985503. The next prime is 28985533. The reversal of 28985519 is 91558982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28985519 - 2⁴ = 28985503 is a prime.

It is a super-2 number, since 2×28985519² = 1680320623398722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28985549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14492759 + 14492760.

It is an arithmetic number, because the mean of its divisors is an integer number (14492760).

Almost surely, 2^28985519 is an apocalyptic number.

28985519 is a deficient number, since it is larger than the sum of its proper divisors (1).

28985519 is an equidigital number, since it uses as much as digits as its factorization.

28985519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 47.

The square root of 28985519 is about 5383.8201121509. The cubic root of 28985519 is about 307.1805358705.

The spelling of 28985519 in words is "twenty-eight million, nine hundred eighty-five thousand, five hundred nineteen".