28253696 has 40 divisors (see below), whose sum is σ = 57001560. Its totient is φ = 13989888.

The previous prime is 28253689. The next prime is 28253713. The reversal of 28253696 is 69635282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70970 + ... + 71366.

It is an arithmetic number, because the mean of its divisors is an integer number (1425039).

Almost surely, 2^28253696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28253696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28500780).

28253696 is an abundant number, since it is smaller than the sum of its proper divisors (28747864).

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

28253696 is an equidigital number, since it uses as much as digits as its factorization.

28253696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 538 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 28253696 is about 5315.4205854288. The cubic root of 28253696 is about 304.5732489156.

The spelling of 28253696 in words is "twenty-eight million, two hundred fifty-three thousand, six hundred ninety-six".