28718322 has 16 divisors (see below), whose sum is σ = 57782592. Its totient is φ = 9515120.

The previous prime is 28718311. The next prime is 28718353. The reversal of 28718322 is 22381782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13329 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (3611412).

Almost surely, 2^28718322 is an apocalyptic number.

28718322 is an abundant number, since it is smaller than the sum of its proper divisors (29064270).

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

28718322 is a wasteful number, since it uses less digits than its factorization.

28718322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833.

The product of its digits is 10752, while the sum is 33.

The square root of 28718322 is about 5358.9478444934. The cubic root of 28718322 is about 306.2337271931.

The spelling of 28718322 in words is "twenty-eight million, seven hundred eighteen thousand, three hundred twenty-two".