28227519 has 12 divisors (see below), whose sum is σ = 40868256. Its totient is φ = 18774432.

The previous prime is 28227503. The next prime is 28227523. The reversal of 28227519 is 91572282.

It is not a de Polignac number, because 28227519 - 2⁴ = 28227503 is a prime.

It is a super-2 number, since 2×28227519² = 1593585657790722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28220519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 682 + ... + 7544.

It is an arithmetic number, because the mean of its divisors is an integer number (3405688).

Almost surely, 2^28227519 is an apocalyptic number.

28227519 is a deficient number, since it is larger than the sum of its proper divisors (12640737).

28227519 is a wasteful number, since it uses less digits than its factorization.

28227519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326 (or 7323 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 28227519 is about 5312.9576508758. The cubic root of 28227519 is about 304.4791576568.

The spelling of 28227519 in words is "twenty-eight million, two hundred twenty-seven thousand, five hundred nineteen".