28424308 has 24 divisors (see below), whose sum is σ = 54409824. Its totient is φ = 12885600.

The previous prime is 28424287. The next prime is 28424309. The reversal of 28424308 is 80342482.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28424308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28424309) 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, 23478 + ... + 24658.

It is an arithmetic number, because the mean of its divisors is an integer number (2267076).

Almost surely, 2^28424308 is an apocalyptic number.

It is an amenable number.

28424308 is a deficient number, since it is larger than the sum of its proper divisors (25985516).

28424308 is a wasteful number, since it uses less digits than its factorization.

28424308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743 (or 1741 counting only the distinct ones).

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

The square root of 28424308 is about 5331.4452074461. The cubic root of 28424308 is about 305.1850816094.

The spelling of 28424308 in words is "twenty-eight million, four hundred twenty-four thousand, three hundred eight".