28859792 has 40 divisors (see below), whose sum is σ = 60647160. Its totient is φ = 13303680.

The previous prime is 28859783. The next prime is 28859797. The reversal of 28859792 is 29795882.

It can be written as a sum of positive squares in 4 ways, for example, as 12082576 + 16777216 = 3476^2 + 4096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28859792.

It is not an unprimeable number, because it can be changed into a prime (28859797) 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, 34742 + ... + 35562.

It is an arithmetic number, because the mean of its divisors is an integer number (1516179).

Almost surely, 2^28859792 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 28859792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30323580).

28859792 is an abundant number, since it is smaller than the sum of its proper divisors (31787368).

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

28859792 is an equidigital number, since it uses as much as digits as its factorization.

28859792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 836 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 28859792 is about 5372.1310482899. The cubic root of 28859792 is about 306.7357521312.

The spelling of 28859792 in words is "twenty-eight million, eight hundred fifty-nine thousand, seven hundred ninety-two".