28044832 has 48 divisors (see below), whose sum is σ = 60383232. Its totient is φ = 12764160.

The previous prime is 28044823. The next prime is 28044833. The reversal of 28044832 is 23844082.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 28044794 and 28044803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044833) 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 7 ways as a sum of consecutive naturals, for example, 16033 + ... + 17695.

It is an arithmetic number, because the mean of its divisors is an integer number (1257984).

Almost surely, 2^28044832 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 28044832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30191616).

28044832 is an abundant number, since it is smaller than the sum of its proper divisors (32338400).

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

28044832 is a wasteful number, since it uses less digits than its factorization.

28044832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 28044832 is about 5295.7371535982. The cubic root of 28044832 is about 303.8208778583.

The spelling of 28044832 in words is "twenty-eight million, forty-four thousand, eight hundred thirty-two".