28651085 has 4 divisors (see below), whose sum is σ = 34381308. Its totient is φ = 22920864.

The previous prime is 28651079. The next prime is 28651109. The reversal of 28651085 is 58015682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3108169 + 25542916 = 1763^2 + 5054^2 .

It is a cyclic number.

It is not a de Polignac number, because 28651085 - 2⁸ = 28650829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2865104 + ... + 2865113.

It is an arithmetic number, because the mean of its divisors is an integer number (8595327).

Almost surely, 2^28651085 is an apocalyptic number.

It is an amenable number.

28651085 is a deficient number, since it is larger than the sum of its proper divisors (5730223).

28651085 is an equidigital number, since it uses as much as digits as its factorization.

28651085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730222.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 28651085 is about 5352.6708286611. The cubic root of 28651085 is about 305.9945497199.

The spelling of 28651085 in words is "twenty-eight million, six hundred fifty-one thousand, eighty-five".