28308806 has 8 divisors (see below), whose sum is σ = 42520464. Its totient is φ = 14135320.

The previous prime is 28308793. The next prime is 28308821. The reversal of 28308806 is 60880382.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7610 + ... + 10701.

It is an arithmetic number, because the mean of its divisors is an integer number (5315058).

Almost surely, 2^28308806 is an apocalyptic number.

28308806 is a deficient number, since it is larger than the sum of its proper divisors (14211658).

28308806 is a wasteful number, since it uses less digits than its factorization.

28308806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19086.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28308806 is about 5320.6020336048. The cubic root of 28308806 is about 304.7711478650.

The spelling of 28308806 in words is "twenty-eight million, three hundred eight thousand, eight hundred six".