28217695 has 16 divisors (see below), whose sum is σ = 37215360. Its totient is φ = 20368800.

The previous prime is 28217669. The next prime is 28217701. The reversal of 28217695 is 59671282.

It is a de Polignac number, because none of the positive numbers 2^k-28217695 is a prime.

It is a super-2 number, since 2×28217695² = 1592476622226050, which contains 22 as substring.

It is a congruent number.

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, 5800 + ... + 9490.

It is an arithmetic number, because the mean of its divisors is an integer number (2325960).

Almost surely, 2^28217695 is an apocalyptic number.

28217695 is a deficient number, since it is larger than the sum of its proper divisors (8997665).

28217695 is a wasteful number, since it uses less digits than its factorization.

28217695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846.

The product of its digits is 60480, while the sum is 40.

The square root of 28217695 is about 5312.0330383009. The cubic root of 28217695 is about 304.4438310154.

The spelling of 28217695 in words is "twenty-eight million, two hundred seventeen thousand, six hundred ninety-five".