28253714 has 8 divisors (see below), whose sum is σ = 43842060. Its totient is φ = 13639696.

The previous prime is 28253713. The next prime is 28253747. The reversal of 28253714 is 41735282.

It can be written as a sum of positive squares in 2 ways, for example, as 28249225 + 4489 = 5315^2 + 67^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28253713) 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 3 ways as a sum of consecutive naturals, for example, 243509 + ... + 243624.

Almost surely, 2^28253714 is an apocalyptic number.

28253714 is a deficient number, since it is larger than the sum of its proper divisors (15588346).

28253714 is a wasteful number, since it uses less digits than its factorization.

28253714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487164.

The product of its digits is 13440, while the sum is 32.

The square root of 28253714 is about 5315.4222786153. The cubic root of 28253714 is about 304.5733135953.

Adding to 28253714 its reverse (41735282), we get a palindrome (69988996).

The spelling of 28253714 in words is "twenty-eight million, two hundred fifty-three thousand, seven hundred fourteen".