28934419 has 4 divisors (see below), whose sum is σ = 29366344. Its totient is φ = 28502496.

The previous prime is 28934413. The next prime is 28934453. The reversal of 28934419 is 91443982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28934419 - 2⁵ = 28934387 is a prime.

It is a super-2 number, since 2×28934419² = 1674401205735122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28934413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215862 + ... + 215995.

It is an arithmetic number, because the mean of its divisors is an integer number (7341586).

Almost surely, 2^28934419 is an apocalyptic number.

28934419 is a deficient number, since it is larger than the sum of its proper divisors (431925).

28934419 is an equidigital number, since it uses as much as digits as its factorization.

28934419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431924.

The product of its digits is 62208, while the sum is 40.

The square root of 28934419 is about 5379.0723177886. The cubic root of 28934419 is about 306.9999151184. Note that the first 4 decimals are identical.

The spelling of 28934419 in words is "twenty-eight million, nine hundred thirty-four thousand, four hundred nineteen".