28041300 has 108 divisors (see below), whose sum is σ = 100472736. Its totient is φ = 6408000.

The previous prime is 28041269. The next prime is 28041311. The reversal of 28041300 is 314082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4075 + ... + 8525.

Almost surely, 2^28041300 is an apocalyptic number.

28041300 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 28041300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50236368).

28041300 is an abundant number, since it is smaller than the sum of its proper divisors (72431436).

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

28041300 is a wasteful number, since it uses less digits than its factorization.

28041300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478 (or 4468 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 28041300 is about 5295.4036673326. The cubic root of 28041300 is about 303.8081228001.

Adding to 28041300 its reverse (314082), we get a palindrome (28355382).

The spelling of 28041300 in words is "twenty-eight million, forty-one thousand, three hundred".