28785996 has 96 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 9127872.

The previous prime is 28785983. The next prime is 28786001. The reversal of 28785996 is 69958782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268975 + ... + 269081.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^28785996 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 28785996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39191040).

28785996 is an abundant number, since it is smaller than the sum of its proper divisors (49596084).

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

28785996 is a wasteful number, since it uses less digits than its factorization.

28785996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 212 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 28785996 is about 5365.2582416879. The cubic root of 28785996 is about 306.4740825077.

The spelling of 28785996 in words is "twenty-eight million, seven hundred eighty-five thousand, nine hundred ninety-six".