28859736 has 64 divisors (see below), whose sum is σ = 74793600. Its totient is φ = 9273600.

The previous prime is 28859723. The next prime is 28859737. The reversal of 28859736 is 63795882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28859737) 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 15 ways as a sum of consecutive naturals, for example, 136671 + ... + 136881.

It is an arithmetic number, because the mean of its divisors is an integer number (1168650).

Almost surely, 2^28859736 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 28859736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37396800).

28859736 is an abundant number, since it is smaller than the sum of its proper divisors (45933864).

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

28859736 is a wasteful number, since it uses less digits than its factorization.

28859736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 396 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28859736 is about 5372.1258362030. The cubic root of 28859736 is about 306.7355537328.

It can be divided in two parts, 2885 and 9736, that added together give a palindrome (12621).

The spelling of 28859736 in words is "twenty-eight million, eight hundred fifty-nine thousand, seven hundred thirty-six".