28591596 has 96 divisors (see below), whose sum is σ = 82978560. Its totient is φ = 8438400.

The previous prime is 28591583. The next prime is 28591597. The reversal of 28591596 is 69519582.

28591596 is a `hidden beast` number, since 2 + 8 + 59 + 1 + 596 = 666.

It is not an unprimeable number, because it can be changed into a prime (28591597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48415 + ... + 49001.

It is an arithmetic number, because the mean of its divisors is an integer number (864360).

Almost surely, 2^28591596 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 28591596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41489280).

28591596 is an abundant number, since it is smaller than the sum of its proper divisors (54386964).

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

28591596 is a wasteful number, since it uses less digits than its factorization.

28591596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 644 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 28591596 is about 5347.1109956686. The cubic root of 28591596 is about 305.7826214690.

The spelling of 28591596 in words is "twenty-eight million, five hundred ninety-one thousand, five hundred ninety-six".