28822765 has 8 divisors (see below), whose sum is σ = 34649208. Its totient is φ = 23016960.

The previous prime is 28822763. The next prime is 28822789. The reversal of 28822765 is 56722882.

It can be written as a sum of positive squares in 4 ways, for example, as 125316 + 28697449 = 354^2 + 5357^2 .

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

It is not a de Polignac number, because 28822765 - 2¹ = 28822763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28822763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (4331151).

Almost surely, 2^28822765 is an apocalyptic number.

It is an amenable number.

28822765 is a deficient number, since it is larger than the sum of its proper divisors (5826443).

28822765 is an equidigital number, since it uses as much as digits as its factorization.

28822765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its digits is 107520, while the sum is 40.

The square root of 28822765 is about 5368.6837306737. The cubic root of 28822765 is about 306.6045157341.

The spelling of 28822765 in words is "twenty-eight million, eight hundred twenty-two thousand, seven hundred sixty-five".