28710912 has 48 divisors (see below), whose sum is σ = 76560120. Its totient is φ = 9568256.

The previous prime is 28710887. The next prime is 28710917. The reversal of 28710912 is 21901782.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28710912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28710917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3808 + ... + 8480.

Almost surely, 2^28710912 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 28710912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38280060).

28710912 is an abundant number, since it is smaller than the sum of its proper divisors (47849208).

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

28710912 is an equidigital number, since it uses as much as digits as its factorization.

28710912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4678 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 28710912 is about 5358.2564328334. The cubic root of 28710912 is about 306.2073864350.

The spelling of 28710912 in words is "twenty-eight million, seven hundred ten thousand, nine hundred twelve".