28663395 has 16 divisors (see below), whose sum is σ = 46103712. Its totient is φ = 15206400.

The previous prime is 28663367. The next prime is 28663409. The reversal of 28663395 is 59336682.

It is not a de Polignac number, because 28663395 - 2⁹ = 28662883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056 + ... + 7845.

It is an arithmetic number, because the mean of its divisors is an integer number (2881482).

Almost surely, 2^28663395 is an apocalyptic number.

28663395 is a deficient number, since it is larger than the sum of its proper divisors (17440317).

28663395 is a wasteful number, since it uses less digits than its factorization.

28663395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102.

The product of its digits is 233280, while the sum is 42.

The square root of 28663395 is about 5353.8205984138. The cubic root of 28663395 is about 306.0383671829.

The spelling of 28663395 in words is "twenty-eight million, six hundred sixty-three thousand, three hundred ninety-five".