28820166 has 8 divisors (see below), whose sum is σ = 57640344. Its totient is φ = 9606720.

The previous prime is 28820149. The next prime is 28820167. The reversal of 28820166 is 66102882.

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

28820166 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28820167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2401675 + ... + 2401686.

It is an arithmetic number, because the mean of its divisors is an integer number (7205043).

Almost surely, 2^28820166 is an apocalyptic number.

28820166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28820166 is a wasteful number, since it uses less digits than its factorization.

28820166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803366.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28820166 is about 5368.4416733350. The cubic root of 28820166 is about 306.5952997655.

The spelling of 28820166 in words is "twenty-eight million, eight hundred twenty thousand, one hundred sixty-six".