28284232 has 8 divisors (see below), whose sum is σ = 53032950. Its totient is φ = 14142112.

The previous prime is 28284211. The next prime is 28284233. The reversal of 28284232 is 23248282.

It can be written as a sum of positive squares in only one way, i.e., 18957316 + 9326916 = 4354^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28284194 and 28284203.

It is not an unprimeable number, because it can be changed into a prime (28284233) 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 as a sum of consecutive naturals, namely, 1767757 + ... + 1767772.

Almost surely, 2^28284232 is an apocalyptic number.

It is an amenable number.

28284232 is a deficient number, since it is larger than the sum of its proper divisors (24748718).

28284232 is a wasteful number, since it uses less digits than its factorization.

28284232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535535 (or 3535531 counting only the distinct ones).

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

The square root of 28284232 is about 5318.2922070905. The cubic root of 28284232 is about 304.6829348621.

The spelling of 28284232 in words is "twenty-eight million, two hundred eighty-four thousand, two hundred thirty-two".