28763222 has 8 divisors (see below), whose sum is σ = 44197272. Its totient is φ = 14030800.

The previous prime is 28763219. The next prime is 28763227. The reversal of 28763222 is 22236782.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28763227) 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, 175304 + ... + 175467.

It is an arithmetic number, because the mean of its divisors is an integer number (5524659).

Almost surely, 2^28763222 is an apocalyptic number.

28763222 is a deficient number, since it is larger than the sum of its proper divisors (15434050).

28763222 is a wasteful number, since it uses less digits than its factorization.

28763222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350814.

The product of its digits is 16128, while the sum is 32.

The square root of 28763222 is about 5363.1354635139. The cubic root of 28763222 is about 306.3932390053.

The spelling of 28763222 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred twenty-two".