28786592 has 48 divisors (see below), whose sum is σ = 59725512. Its totient is φ = 13639680.

The previous prime is 28786591. The next prime is 28786609. The reversal of 28786592 is 29568782.

It can be written as a sum of positive squares in 4 ways, for example, as 24641296 + 4145296 = 4964^2 + 2036^2 .

It is not an unprimeable number, because it can be changed into a prime (28786591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48248 + ... + 48840.

Almost surely, 2^28786592 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 28786592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29862756).

28786592 is an abundant number, since it is smaller than the sum of its proper divisors (30938920).

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

28786592 is a wasteful number, since it uses less digits than its factorization.

28786592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 673 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 28786592 is about 5365.3137839273. The cubic root of 28786592 is about 306.4761976252.

The spelling of 28786592 in words is "twenty-eight million, seven hundred eighty-six thousand, five hundred ninety-two".