28656200 has 24 divisors (see below), whose sum is σ = 66626130. Its totient is φ = 11462400.

The previous prime is 28656197. The next prime is 28656227. The reversal of 28656200 is 265682.

It can be written as a sum of positive squares in 3 ways, for example, as 22905796 + 5750404 = 4786^2 + 2398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71441 + ... + 71840.

Almost surely, 2^28656200 is an apocalyptic number.

28656200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28656200 is an abundant number, since it is smaller than the sum of its proper divisors (37969930).

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

28656200 is a wasteful number, since it uses less digits than its factorization.

28656200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143297 (or 143288 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28656200 is about 5353.1486061943. The cubic root of 28656200 is about 306.0127580937.

The spelling of 28656200 in words is "twenty-eight million, six hundred fifty-six thousand, two hundred".