28078300 has 36 divisors (see below), whose sum is σ = 61942216. Its totient is φ = 11044800.

The previous prime is 28078283. The next prime is 28078307. The reversal of 28078300 is 387082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28078307) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3799 + ... + 8401.

Almost surely, 2^28078300 is an apocalyptic number.

28078300 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 28078300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30971108).

28078300 is an abundant number, since it is smaller than the sum of its proper divisors (33863916).

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

28078300 is a wasteful number, since it uses less digits than its factorization.

28078300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 4671 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 28078300 is about 5298.8961114557. The cubic root of 28078300 is about 303.9416872225.

The spelling of 28078300 in words is "twenty-eight million, seventy-eight thousand, three hundred".