28717300 has 18 divisors (see below), whose sum is σ = 62316758. Its totient is φ = 11486880.

The previous prime is 28717289. The next prime is 28717307. The reversal of 28717300 is 371782.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 51984 + 28665316 = 228^2 + 5354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28717307) 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 5 ways as a sum of consecutive naturals, for example, 143487 + ... + 143686.

Almost surely, 2^28717300 is an apocalyptic number.

28717300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28717300 is an abundant number, since it is smaller than the sum of its proper divisors (33599458).

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

28717300 is a wasteful number, since it uses less digits than its factorization.

28717300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287187 (or 287180 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 28717300 is about 5358.8524891062. The cubic root of 28717300 is about 306.2300944996.

The spelling of 28717300 in words is "twenty-eight million, seven hundred seventeen thousand, three hundred".