28996219 has 8 divisors (see below), whose sum is σ = 33182208. Its totient is φ = 24821160.

The previous prime is 28996217. The next prime is 28996229. The reversal of 28996219 is 91269982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28996219 - 2¹ = 28996217 is a prime.

It is a super-2 number, since 2×28996219² = 1681561432591922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28996211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4104 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (4147776).

Almost surely, 2^28996219 is an apocalyptic number.

28996219 is a deficient number, since it is larger than the sum of its proper divisors (4185989).

28996219 is an equidigital number, since it uses as much as digits as its factorization.

28996219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465.

The product of its digits is 139968, while the sum is 46.

The square root of 28996219 is about 5384.8137386543. The cubic root of 28996219 is about 307.2183297700.

The spelling of 28996219 in words is "twenty-eight million, nine hundred ninety-six thousand, two hundred nineteen".