28783600 has 60 divisors (see below), whose sum is σ = 69676344. Its totient is φ = 11426560.

The previous prime is 28783597. The next prime is 28783607. The reversal of 28783600 is 638782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90642 + ... + 90958.

Almost surely, 2^28783600 is an apocalyptic number.

28783600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28783600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34838172).

28783600 is an abundant number, since it is smaller than the sum of its proper divisors (40892744).

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

28783600 is a wasteful number, since it uses less digits than its factorization.

28783600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 551 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28783600 is about 5365.0349486280. The cubic root of 28783600 is about 306.4655791568.

The spelling of 28783600 in words is "twenty-eight million, seven hundred eighty-three thousand, six hundred".