28499600 has 30 divisors (see below), whose sum is σ = 68471250. Its totient is φ = 11399680.

The previous prime is 28499593. The next prime is 28499641. The reversal of 28499600 is 699482.

It can be written as a sum of positive squares in 3 ways, for example, as 7118224 + 21381376 = 2668^2 + 4624^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 35225 + ... + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (2282375).

Almost surely, 2^28499600 is an apocalyptic number.

28499600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28499600 is an abundant number, since it is smaller than the sum of its proper divisors (39971650).

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

28499600 is a wasteful number, since it uses less digits than its factorization.

28499600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71267 (or 71256 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 28499600 is about 5338.5016624517. The cubic root of 28499600 is about 305.4543081751.

The spelling of 28499600 in words is "twenty-eight million, four hundred ninety-nine thousand, six hundred".