28981334 has 8 divisors (see below), whose sum is σ = 45362160. Its totient is φ = 13860616.

The previous prime is 28981333. The next prime is 28981339. The reversal of 28981334 is 43318982.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28981333) 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 3 ways as a sum of consecutive naturals, for example, 314969 + ... + 315060.

It is an arithmetic number, because the mean of its divisors is an integer number (5670270).

Almost surely, 2^28981334 is an apocalyptic number.

28981334 is a deficient number, since it is larger than the sum of its proper divisors (16380826).

28981334 is a wasteful number, since it uses less digits than its factorization.

28981334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630054.

The product of its digits is 41472, while the sum is 38.

The square root of 28981334 is about 5383.4314335747. The cubic root of 28981334 is about 307.1657513337.

The spelling of 28981334 in words is "twenty-eight million, nine hundred eighty-one thousand, three hundred thirty-four".