28308030 has 16 divisors (see below), whose sum is σ = 67939344. Its totient is φ = 7548800.

The previous prime is 28308017. The next prime is 28308067. The reversal of 28308030 is 3080382.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471771 + ... + 471830.

It is an arithmetic number, because the mean of its divisors is an integer number (4246209).

Almost surely, 2^28308030 is an apocalyptic number.

28308030 is an abundant number, since it is smaller than the sum of its proper divisors (39631314).

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

28308030 is a wasteful number, since it uses less digits than its factorization.

28308030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943611.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28308030 is about 5320.5291090267. The cubic root of 28308030 is about 304.7683630475.

The spelling of 28308030 in words is "twenty-eight million, three hundred eight thousand, thirty".