28006832 has 60 divisors (see below), whose sum is σ = 63824040. Its totient is φ = 11870208.

The previous prime is 28006829. The next prime is 28006859. The reversal of 28006832 is 23860082.

It is a junction number, because it is equal to n+sod(n) for n = 28006795 and 28006804.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 108848 + ... + 109104.

It is an arithmetic number, because the mean of its divisors is an integer number (1063734).

Almost surely, 2^28006832 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 28006832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31912020).

28006832 is an abundant number, since it is smaller than the sum of its proper divisors (35817208).

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

28006832 is a wasteful number, since it uses less digits than its factorization.

28006832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28006832 is about 5292.1481460745. The cubic root of 28006832 is about 303.6835927694.

The spelling of 28006832 in words is "twenty-eight million, six thousand, eight hundred thirty-two".