28823020 has 12 divisors (see below), whose sum is σ = 60528384. Its totient is φ = 11529200.

The previous prime is 28823009. The next prime is 28823021. The reversal of 28823020 is 2032882.

It is not an unprimeable number, because it can be changed into a prime (28823021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 720556 + ... + 720595.

It is an arithmetic number, because the mean of its divisors is an integer number (5044032).

Almost surely, 2^28823020 is an apocalyptic number.

28823020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28823020 is an abundant number, since it is smaller than the sum of its proper divisors (31705364).

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

28823020 is a wasteful number, since it uses less digits than its factorization.

28823020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441160 (or 1441158 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28823020 is about 5368.7074794591. The cubic root of 28823020 is about 306.6054199259.

The spelling of 28823020 in words is "twenty-eight million, eight hundred twenty-three thousand, twenty".