28884434 has 8 divisors (see below), whose sum is σ = 43349628. Its totient is φ = 14434560.

The previous prime is 28884419. The next prime is 28884469. The reversal of 28884434 is 43448882.

It can be written as a sum of positive squares in 2 ways, for example, as 28249225 + 635209 = 5315^2 + 797^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28884391 and 28884400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4574 + ... + 8870.

Almost surely, 2^28884434 is an apocalyptic number.

28884434 is a deficient number, since it is larger than the sum of its proper divisors (14465194).

28884434 is a wasteful number, since it uses less digits than its factorization.

28884434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660.

The product of its digits is 196608, while the sum is 41.

The square root of 28884434 is about 5374.4240621670. The cubic root of 28884434 is about 306.8230296385.

The spelling of 28884434 in words is "twenty-eight million, eight hundred eighty-four thousand, four hundred thirty-four".