28318300 has 18 divisors (see below), whose sum is σ = 61450928. Its totient is φ = 11327280.

The previous prime is 28318291. The next prime is 28318307. The reversal of 28318300 is 381382.

It is a super-2 number, since 2×28318300² = 1603852229780000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318307) 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, 141492 + ... + 141691.

Almost surely, 2^28318300 is an apocalyptic number.

28318300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28318300 is an abundant number, since it is smaller than the sum of its proper divisors (33132628).

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

28318300 is a wasteful number, since it uses less digits than its factorization.

28318300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283197 (or 283190 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28318300 is about 5321.4941510820. The cubic root of 28318300 is about 304.8052146953.

Adding to 28318300 its reverse (381382), we get a palindrome (28699682).

The spelling of 28318300 in words is "twenty-eight million, three hundred eighteen thousand, three hundred".