28813334 has 16 divisors (see below), whose sum is σ = 49923216. Its totient is φ = 12326400.

The previous prime is 28813333. The next prime is 28813339. The reversal of 28813334 is 43331882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28813334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28813333) 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 7 ways as a sum of consecutive naturals, for example, 38147 + ... + 38894.

It is an arithmetic number, because the mean of its divisors is an integer number (3120201).

Almost surely, 2^28813334 is an apocalyptic number.

28813334 is a deficient number, since it is larger than the sum of its proper divisors (21109882).

28813334 is a wasteful number, since it uses less digits than its factorization.

28813334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77071.

The product of its digits is 13824, while the sum is 32.

The square root of 28813334 is about 5367.8053243388. The cubic root of 28813334 is about 306.5710710752.

The spelling of 28813334 in words is "twenty-eight million, eight hundred thirteen thousand, three hundred thirty-four".