28776322 has 8 divisors (see below), whose sum is σ = 43278336. Its totient is φ = 14350212.

The previous prime is 28776283. The next prime is 28776329. The reversal of 28776322 is 22367782.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28776329) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 18018 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (5409792).

Almost surely, 2^28776322 is an apocalyptic number.

28776322 is a deficient number, since it is larger than the sum of its proper divisors (14502014).

28776322 is a wasteful number, since it uses less digits than its factorization.

28776322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37952.

The product of its digits is 56448, while the sum is 37.

The square root of 28776322 is about 5364.3566249831. The cubic root of 28776322 is about 306.4397468020.

The spelling of 28776322 in words is "twenty-eight million, seven hundred seventy-six thousand, three hundred twenty-two".