28324506 has 16 divisors (see below), whose sum is σ = 64741824. Its totient is φ = 8092704.

The previous prime is 28324411. The next prime is 28324507. The reversal of 28324506 is 60542382.

It is not an unprimeable number, because it can be changed into a prime (28324507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337155 + ... + 337238.

It is an arithmetic number, because the mean of its divisors is an integer number (4046364).

Almost surely, 2^28324506 is an apocalyptic number.

28324506 is an abundant number, since it is smaller than the sum of its proper divisors (36417318).

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

28324506 is a wasteful number, since it uses less digits than its factorization.

28324506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674405.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28324506 is about 5322.0772260462. The cubic root of 28324506 is about 304.8274792497.

Adding to 28324506 its reverse (60542382), we get a palindrome (88866888).

The spelling of 28324506 in words is "twenty-eight million, three hundred twenty-four thousand, five hundred six".