28896020 has 12 divisors (see below), whose sum is σ = 60681684. Its totient is φ = 11558400.

The previous prime is 28896019. The next prime is 28896029. The reversal of 28896020 is 2069882.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 19483396 = 3068^2 + 4414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28896029) 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 3 ways as a sum of consecutive naturals, for example, 722381 + ... + 722420.

It is an arithmetic number, because the mean of its divisors is an integer number (5056807).

Almost surely, 2^28896020 is an apocalyptic number.

28896020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28896020 is an abundant number, since it is smaller than the sum of its proper divisors (31785664).

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

28896020 is a wasteful number, since it uses less digits than its factorization.

28896020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444810 (or 1444808 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28896020 is about 5375.5018370381. The cubic root of 28896020 is about 306.8640479995.

The spelling of 28896020 in words is "twenty-eight million, eight hundred ninety-six thousand, twenty".