28166600 has 192 divisors, whose sum is σ = 85708800. Its totient is φ = 8352000.

The previous prime is 28166561. The next prime is 28166629. The reversal of 28166600 is 666182.

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 47 ways as a sum of consecutive naturals, for example, 477371 + ... + 477429.

It is an arithmetic number, because the mean of its divisors is an integer number (446400).

Almost surely, 2^28166600 is an apocalyptic number.

28166600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28166600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42854400).

28166600 is an abundant number, since it is smaller than the sum of its proper divisors (57542200).

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

28166600 is a wasteful number, since it uses less digits than its factorization.

28166600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28166600 is about 5307.2214952836. The cubic root of 28166600 is about 304.2599634571.

The spelling of 28166600 in words is "twenty-eight million, one hundred sixty-six thousand, six hundred".