28466825 has 6 divisors (see below), whose sum is σ = 35298894. Its totient is φ = 22773440.

The previous prime is 28466821. The next prime is 28466869. The reversal of 28466825 is 52866482.

It can be written as a sum of positive squares in 3 ways, for example, as 132496 + 28334329 = 364^2 + 5323^2 .

It is not a de Polignac number, because 28466825 - 2² = 28466821 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 (28466821) 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, 569312 + ... + 569361.

It is an arithmetic number, because the mean of its divisors is an integer number (5883149).

Almost surely, 2^28466825 is an apocalyptic number.

28466825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28466825 is a deficient number, since it is larger than the sum of its proper divisors (6832069).

28466825 is a wasteful number, since it uses less digits than its factorization.

28466825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138683 (or 1138678 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 28466825 is about 5335.4310978589. The cubic root of 28466825 is about 305.3371707988.

The spelling of 28466825 in words is "twenty-eight million, four hundred sixty-six thousand, eight hundred twenty-five".