28739085 has 8 divisors (see below), whose sum is σ = 45982560. Its totient is φ = 15327504.

The previous prime is 28739071. The next prime is 28739089. The reversal of 28739085 is 58093782.

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

It is not a de Polignac number, because 28739085 - 2⁴ = 28739069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28739089) 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, 957955 + ... + 957984.

It is an arithmetic number, because the mean of its divisors is an integer number (5747820).

Almost surely, 2^28739085 is an apocalyptic number.

It is an amenable number.

28739085 is a deficient number, since it is larger than the sum of its proper divisors (17243475).

28739085 is a wasteful number, since it uses less digits than its factorization.

28739085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915947.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 28739085 is about 5360.8847217600. The cubic root of 28739085 is about 306.3075105100.

The spelling of 28739085 in words is "twenty-eight million, seven hundred thirty-nine thousand, eighty-five".