28346725 has 12 divisors (see below), whose sum is σ = 38345760. Its totient is φ = 20615600.

The previous prime is 28346711. The next prime is 28346729. The reversal of 28346725 is 52764382.

It is not a de Polignac number, because 28346725 - 2¹³ = 28338533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28346729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51265 + ... + 51814.

It is an arithmetic number, because the mean of its divisors is an integer number (3195480).

Almost surely, 2^28346725 is an apocalyptic number.

28346725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28346725 is a deficient number, since it is larger than the sum of its proper divisors (9999035).

28346725 is a wasteful number, since it uses less digits than its factorization.

28346725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103100 (or 103095 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 28346725 is about 5324.1642536646. The cubic root of 28346725 is about 304.9071651529.

It can be divided in two parts, 2834 and 6725, that added together give a palindrome (9559).

The spelling of 28346725 in words is "twenty-eight million, three hundred forty-six thousand, seven hundred twenty-five".