28447600 has 30 divisors (see below), whose sum is σ = 68346320. Its totient is φ = 11378880.

The previous prime is 28447577. The next prime is 28447603. The reversal of 28447600 is 674482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447603) by changing a digit.

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, 35160 + ... + 35959.

Almost surely, 2^28447600 is an apocalyptic number.

28447600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28447600 is an abundant number, since it is smaller than the sum of its proper divisors (39898720).

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

28447600 is a wasteful number, since it uses less digits than its factorization.

28447600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71137 (or 71126 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 28447600 is about 5333.6291584624. The cubic root of 28447600 is about 305.2684190845.

The spelling of 28447600 in words is "twenty-eight million, four hundred forty-seven thousand, six hundred".