28060985 has 8 divisors (see below), whose sum is σ = 34583496. Its totient is φ = 21841920.

The previous prime is 28060969. The next prime is 28060987. The reversal of 28060985 is 58906082.

It can be written as a sum of positive squares in 4 ways, for example, as 13719616 + 14341369 = 3704^2 + 3787^2 .

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

It is not a de Polignac number, because 28060985 - 2⁴ = 28060969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28060987) 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, 75656 + ... + 76025.

It is an arithmetic number, because the mean of its divisors is an integer number (4322937).

Almost surely, 2^28060985 is an apocalyptic number.

It is an amenable number.

28060985 is a deficient number, since it is larger than the sum of its proper divisors (6522511).

28060985 is a wasteful number, since it uses less digits than its factorization.

28060985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151723.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 28060985 is about 5297.2620286333. The cubic root of 28060985 is about 303.8791972987.

The spelling of 28060985 in words is "twenty-eight million, sixty thousand, nine hundred eighty-five".