28585650 has 48 divisors (see below), whose sum is σ = 71424000. Its totient is φ = 7565760.

The previous prime is 28585649. The next prime is 28585657. The reversal of 28585650 is 5658582.

It is a junction number, because it is equal to n+sod(n) for n = 28585599 and 28585608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28585657) 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 23 ways as a sum of consecutive naturals, for example, 21711 + ... + 22989.

It is an arithmetic number, because the mean of its divisors is an integer number (1488000).

Almost surely, 2^28585650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28585650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35712000).

28585650 is an abundant number, since it is smaller than the sum of its proper divisors (42838350).

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

28585650 is a wasteful number, since it uses less digits than its factorization.

28585650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 28585650 is about 5346.5549655830. The cubic root of 28585650 is about 305.7614228213.

The spelling of 28585650 in words is "twenty-eight million, five hundred eighty-five thousand, six hundred fifty".