28545806 has 8 divisors (see below), whose sum is σ = 44680464. Its totient is φ = 13652320.

The previous prime is 28545791. The next prime is 28545821. The reversal of 28545806 is 60854582.

28545806 = T₁₅₆₄ + T₁₅₆₅ + ... + T₁₅₈₆.

It is an interprime number because it is at equal distance from previous prime (28545791) and next prime (28545821).

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

It is a self number, because there is not a number n which added to its sum of digits gives 28545806.

It is a congruent number.

It is an unprimeable number.

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, 310235 + ... + 310326.

It is an arithmetic number, because the mean of its divisors is an integer number (5585058).

Almost surely, 2^28545806 is an apocalyptic number.

28545806 is a deficient number, since it is larger than the sum of its proper divisors (16134658).

28545806 is a wasteful number, since it uses less digits than its factorization.

28545806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620586.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 28545806 is about 5342.8275285657. The cubic root of 28545806 is about 305.6192952991.

The spelling of 28545806 in words is "twenty-eight million, five hundred forty-five thousand, eight hundred six".