28812734 has 8 divisors (see below), whose sum is σ = 43241880. Its totient is φ = 14398776.

The previous prime is 28812731. The next prime is 28812743. The reversal of 28812734 is 43721882.

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 = 28812694 and 28812703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28812731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5552 + ... + 9404.

It is an arithmetic number, because the mean of its divisors is an integer number (5405235).

Almost surely, 2^28812734 is an apocalyptic number.

28812734 is a deficient number, since it is larger than the sum of its proper divisors (14429146).

28812734 is a wasteful number, since it uses less digits than its factorization.

28812734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594.

The product of its digits is 21504, while the sum is 35.

The square root of 28812734 is about 5367.7494352848. The cubic root of 28812734 is about 306.5689430799.

The spelling of 28812734 in words is "twenty-eight million, eight hundred twelve thousand, seven hundred thirty-four".