28865766 has 8 divisors (see below), whose sum is σ = 57731544. Its totient is φ = 9621920.

The previous prime is 28865747. The next prime is 28865773. The reversal of 28865766 is 66756882.

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

28865766 is an admirable number.

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, 2405475 + ... + 2405486.

It is an arithmetic number, because the mean of its divisors is an integer number (7216443).

Almost surely, 2^28865766 is an apocalyptic number.

28865766 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.

28865766 is a wasteful number, since it uses less digits than its factorization.

28865766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810966.

The product of its digits is 967680, while the sum is 48.

The square root of 28865766 is about 5372.6870372282. The cubic root of 28865766 is about 306.7569155196.

The spelling of 28865766 in words is "twenty-eight million, eight hundred sixty-five thousand, seven hundred sixty-six".