28207635 has 8 divisors (see below), whose sum is σ = 45132240. Its totient is φ = 15044064.

The previous prime is 28207561. The next prime is 28207643. The reversal of 28207635 is 53670282.

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

It is not a de Polignac number, because 28207635 - 2⁷ = 28207507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28207596 and 28207605.

It is an unprimeable number.

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, 940240 + ... + 940269.

It is an arithmetic number, because the mean of its divisors is an integer number (5641530).

Almost surely, 2^28207635 is an apocalyptic number.

28207635 is a deficient number, since it is larger than the sum of its proper divisors (16924605).

28207635 is a wasteful number, since it uses less digits than its factorization.

28207635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880517.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28207635 is about 5311.0860471282. The cubic root of 28207635 is about 304.4076472310.

The spelling of 28207635 in words is "twenty-eight million, two hundred seven thousand, six hundred thirty-five".