28285203080 has 32 divisors (see below), whose sum is σ = 63647602200. Its totient is φ = 11313033216.

The previous prime is 28285203077. The next prime is 28285203083. The reversal of 28285203080 is 8030258282.

It is an interprime number because it is at equal distance from previous prime (28285203077) and next prime (28285203083).

It can be written as a sum of positive squares in 4 ways, for example, as 19990000996 + 8295202084 = 141386^2 + 91078^2 .

It is not an unprimeable number, because it can be changed into a prime (28285203083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519386 + ... + 571254.

Almost surely, 2^28285203080 is an apocalyptic number.

28285203080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28285203080 is an abundant number, since it is smaller than the sum of its proper divisors (35362399120).

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

28285203080 is a wasteful number, since it uses less digits than its factorization.

28285203080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65513 (or 65509 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 28285203080 in words is "twenty-eight billion, two hundred eighty-five million, two hundred three thousand, eighty".