28677200 has 30 divisors (see below), whose sum is σ = 68897934. Its totient is φ = 11470720.

The previous prime is 28677197. The next prime is 28677211. The reversal of 28677200 is 277682.

It can be written as a sum of positive squares in 3 ways, for example, as 204304 + 28472896 = 452^2 + 5336^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 35447 + ... + 36246.

Almost surely, 2^28677200 is an apocalyptic number.

28677200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28677200 is an abundant number, since it is smaller than the sum of its proper divisors (40220734).

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

28677200 is a wasteful number, since it uses less digits than its factorization.

28677200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71711 (or 71700 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 28677200 is about 5355.1097094271. The cubic root of 28677200 is about 306.0874911797.

The spelling of 28677200 in words is "twenty-eight million, six hundred seventy-seven thousand, two hundred".