28982280 has 64 divisors (see below), whose sum is σ = 92067840. Its totient is φ = 7273472.

The previous prime is 28982279. The next prime is 28982293. The reversal of 28982280 is 8228982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5064 + ... + 9143.

It is an arithmetic number, because the mean of its divisors is an integer number (1438560).

Almost surely, 2^28982280 is an apocalyptic number.

28982280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28982280 is an abundant number, since it is smaller than the sum of its proper divisors (63085560).

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

28982280 is a wasteful number, since it uses less digits than its factorization.

28982280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14238 (or 14234 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28982280 is about 5383.5192950337. The cubic root of 28982280 is about 307.1690934347.

The spelling of 28982280 in words is "twenty-eight million, nine hundred eighty-two thousand, two hundred eighty".