28439735 has 8 divisors (see below), whose sum is σ = 34441440. Its totient is φ = 22542624.

The previous prime is 28439731. The next prime is 28439743. The reversal of 28439735 is 53793482.

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

It is a cyclic number.

It is not a de Polignac number, because 28439735 - 2² = 28439731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28439692 and 28439701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28439731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25547 + ... + 26636.

It is an arithmetic number, because the mean of its divisors is an integer number (4305180).

Almost surely, 2^28439735 is an apocalyptic number.

28439735 is a deficient number, since it is larger than the sum of its proper divisors (6001705).

28439735 is a wasteful number, since it uses less digits than its factorization.

28439735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52297.

The product of its digits is 181440, while the sum is 41.

The square root of 28439735 is about 5332.8918046403. The cubic root of 28439735 is about 305.2402836423.

The spelling of 28439735 in words is "twenty-eight million, four hundred thirty-nine thousand, seven hundred thirty-five".