28943080 has 32 divisors (see below), whose sum is σ = 68551200. Its totient is φ = 10967616.

The previous prime is 28943069. The next prime is 28943087. The reversal of 28943080 is 8034982.

It is not an unprimeable number, because it can be changed into a prime (28943087) 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, 18282 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (2142225).

Almost surely, 2^28943080 is an apocalyptic number.

28943080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28943080 is an abundant number, since it is smaller than the sum of its proper divisors (39608120).

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

28943080 is a wasteful number, since it uses less digits than its factorization.

28943080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38113 (or 38109 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28943080 is about 5379.8773220214. The cubic root of 28943080 is about 307.0305437043.

The spelling of 28943080 in words is "twenty-eight million, nine hundred forty-three thousand, eighty".