28350500 has 24 divisors (see below), whose sum is σ = 61918584. Its totient is φ = 11340000.

The previous prime is 28350433. The next prime is 28350521. The reversal of 28350500 is 505382.

It can be written as a sum of positive squares in 4 ways, for example, as 556516 + 27793984 = 746^2 + 5272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27851 + ... + 28850.

It is an arithmetic number, because the mean of its divisors is an integer number (2579941).

Almost surely, 2^28350500 is an apocalyptic number.

28350500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28350500 is an abundant number, since it is smaller than the sum of its proper divisors (33568084).

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

28350500 is a wasteful number, since it uses less digits than its factorization.

28350500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56720 (or 56708 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 28350500 is about 5324.5187575968. The cubic root of 28350500 is about 304.9206996201.

Adding to 28350500 its reverse (505382), we get a palindrome (28855882).

The spelling of 28350500 in words is "twenty-eight million, three hundred fifty thousand, five hundred".