28582332 has 12 divisors (see below), whose sum is σ = 66692136. Its totient is φ = 9527440.

The previous prime is 28582331. The next prime is 28582339. The reversal of 28582332 is 23328582.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 28582293 and 28582302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28582331) 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, 1190919 + ... + 1190942.

It is an arithmetic number, because the mean of its divisors is an integer number (5557678).

Almost surely, 2^28582332 is an apocalyptic number.

It is an amenable number.

28582332 is an abundant number, since it is smaller than the sum of its proper divisors (38109804).

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

28582332 is a wasteful number, since it uses less digits than its factorization.

28582332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381868 (or 2381866 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 28582332 is about 5346.2446633127. The cubic root of 28582332 is about 305.7495922273.

The spelling of 28582332 in words is "twenty-eight million, five hundred eighty-two thousand, three hundred thirty-two".