28759325 has 36 divisors (see below), whose sum is σ = 43955892. Its totient is φ = 18547200.

The previous prime is 28759321. The next prime is 28759349. The reversal of 28759325 is 52395782.

It can be written as a sum of positive squares in 6 ways, for example, as 8281 + 28751044 = 91^2 + 5362^2 .

It is not a de Polignac number, because 28759325 - 2² = 28759321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28759321) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20135 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (1220997).

Almost surely, 2^28759325 is an apocalyptic number.

28759325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28759325 is a deficient number, since it is larger than the sum of its proper divisors (15196567).

28759325 is a wasteful number, since it uses less digits than its factorization.

28759325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1410 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 28759325 is about 5362.7721376169. The cubic root of 28759325 is about 306.3794010982.

The spelling of 28759325 in words is "twenty-eight million, seven hundred fifty-nine thousand, three hundred twenty-five".