28739135 has 8 divisors (see below), whose sum is σ = 34568160. Its totient is φ = 22937184.

The previous prime is 28739111. The next prime is 28739141. The reversal of 28739135 is 53193782.

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 28739135 - 2⁶ = 28739071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4352 + ... + 8741.

It is an arithmetic number, because the mean of its divisors is an integer number (4321020).

Almost surely, 2^28739135 is an apocalyptic number.

28739135 is a deficient number, since it is larger than the sum of its proper divisors (5829025).

28739135 is a wasteful number, since it uses less digits than its factorization.

28739135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537.

The product of its digits is 45360, while the sum is 38.

The square root of 28739135 is about 5360.8893851674. The cubic root of 28739135 is about 306.3076881469.

The spelling of 28739135 in words is "twenty-eight million, seven hundred thirty-nine thousand, one hundred thirty-five".