28635249 has 8 divisors (see below), whose sum is σ = 38640672. Its totient is φ = 18860000.

The previous prime is 28635137. The next prime is 28635283. The reversal of 28635249 is 94253682.

It is a happy number.

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 28635249 - 2⁸ = 28634993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28635049) 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, 57252 + ... + 57749.

It is an arithmetic number, because the mean of its divisors is an integer number (4830084).

Almost surely, 2^28635249 is an apocalyptic number.

It is an amenable number.

28635249 is a deficient number, since it is larger than the sum of its proper divisors (10005423).

28635249 is a wasteful number, since it uses less digits than its factorization.

28635249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115087.

The product of its digits is 103680, while the sum is 39.

The square root of 28635249 is about 5351.1913626780. The cubic root of 28635249 is about 305.9381629928.

The spelling of 28635249 in words is "twenty-eight million, six hundred thirty-five thousand, two hundred forty-nine".