28250010 has 24 divisors (see below), whose sum is σ = 73450260. Its totient is φ = 7533312.

The previous prime is 28249999. The next prime is 28250023. The reversal of 28250010 is 1005282.

It can be written as a sum of positive squares in 2 ways, for example, as 25918281 + 2331729 = 5091^2 + 1527^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156855 + ... + 157034.

Almost surely, 2^28250010 is an apocalyptic number.

28250010 is an abundant number, since it is smaller than the sum of its proper divisors (45200250).

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

28250010 is a wasteful number, since it uses less digits than its factorization.

28250010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313902 (or 313899 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 28250010 is about 5315.0738470881. The cubic root of 28250010 is about 304.5600033823.

Adding to 28250010 its reverse (1005282), we get a palindrome (29255292).

The spelling of 28250010 in words is "twenty-eight million, two hundred fifty thousand, ten".