28842219 has 12 divisors (see below), whose sum is σ = 47612656. Its totient is φ = 16481232.

The previous prime is 28842197. The next prime is 28842221. The reversal of 28842219 is 91224882.

It is not a de Polignac number, because 28842219 - 2²⁴ = 12065003 is a prime.

It is a super-2 number, since 2×28842219² = 1663747193687922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28842119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228844 + ... + 228969.

Almost surely, 2^28842219 is an apocalyptic number.

28842219 is a deficient number, since it is larger than the sum of its proper divisors (18770437).

28842219 is a wasteful number, since it uses less digits than its factorization.

28842219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457826 (or 457823 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 28842219 is about 5370.4952285613. The cubic root of 28842219 is about 306.6734813913.

The spelling of 28842219 in words is "twenty-eight million, eight hundred forty-two thousand, two hundred nineteen".