28236832 has 48 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 12886272.

The previous prime is 28236827. The next prime is 28236833. The reversal of 28236832 is 23863282.

It is not an unprimeable number, because it can be changed into a prime (28236833) 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, 42519 + ... + 43177.

It is an arithmetic number, because the mean of its divisors is an integer number (1261260).

Almost surely, 2^28236832 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 28236832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30270240).

28236832 is an abundant number, since it is smaller than the sum of its proper divisors (32303648).

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

28236832 is a wasteful number, since it uses less digits than its factorization.

28236832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 777 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 28236832 is about 5313.8340207425. The cubic root of 28236832 is about 304.5126391990.

The spelling of 28236832 in words is "twenty-eight million, two hundred thirty-six thousand, eight hundred thirty-two".