28485806 has 12 divisors (see below), whose sum is σ = 43063728. Its totient is φ = 14131992.

The previous prime is 28485803. The next prime is 28485811. The reversal of 28485806 is 60858482.

It is a super-2 number, since 2×28485806² = 1622882286939272, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485803) 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, 77435 + ... + 77801.

It is an arithmetic number, because the mean of its divisors is an integer number (3588644).

Almost surely, 2^28485806 is an apocalyptic number.

28485806 is a deficient number, since it is larger than the sum of its proper divisors (14577922).

28485806 is an equidigital number, since it uses as much as digits as its factorization.

28485806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 28485806 is about 5337.2095705528. The cubic root of 28485806 is about 305.4050195689.

The spelling of 28485806 in words is "twenty-eight million, four hundred eighty-five thousand, eight hundred six".