28285396 has 12 divisors (see below), whose sum is σ = 49550452. Its totient is φ = 14128128.

The previous prime is 28285373. The next prime is 28285417. The reversal of 28285396 is 69358282.

It can be written as a sum of positive squares in 2 ways, for example, as 25361296 + 2924100 = 5036^2 + 1710^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1546 + ... + 7678.

Almost surely, 2^28285396 is an apocalyptic number.

It is an amenable number.

28285396 is a deficient number, since it is larger than the sum of its proper divisors (21265056).

28285396 is a wasteful number, since it uses less digits than its factorization.

28285396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290 (or 7288 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 28285396 is about 5318.4016395906. The cubic root of 28285396 is about 304.6871144120.

The spelling of 28285396 in words is "twenty-eight million, two hundred eighty-five thousand, three hundred ninety-six".