28316004 has 24 divisors (see below), whose sum is σ = 69548640. Its totient is φ = 8941824.

The previous prime is 28315997. The next prime is 28316011. The reversal of 28316004 is 40061382.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28315997) and next prime (28316011).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61869 + ... + 62324.

It is an arithmetic number, because the mean of its divisors is an integer number (2897860).

Almost surely, 2^28316004 is an apocalyptic number.

It is an amenable number.

28316004 is an abundant number, since it is smaller than the sum of its proper divisors (41232636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28316004 is a wasteful number, since it uses less digits than its factorization.

28316004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124219 (or 124217 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28316004 is about 5321.2784178240. The cubic root of 28316004 is about 304.7969767751.

Adding to 28316004 its reverse (40061382), we get a palindrome (68377386).

The spelling of 28316004 in words is "twenty-eight million, three hundred sixteen thousand, four".