28223352 has 48 divisors (see below), whose sum is σ = 77528880. Its totient is φ = 9273600.

The previous prime is 28223347. The next prime is 28223353. The reversal of 28223352 is 25332282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28223353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2352 + ... + 7872.

It is an arithmetic number, because the mean of its divisors is an integer number (1615185).

Almost surely, 2^28223352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28223352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38764440).

28223352 is an abundant number, since it is smaller than the sum of its proper divisors (49305528).

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

28223352 is a wasteful number, since it uses less digits than its factorization.

28223352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604 (or 5597 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 28223352 is about 5312.5654819494. The cubic root of 28223352 is about 304.4641743222.

The spelling of 28223352 in words is "twenty-eight million, two hundred twenty-three thousand, three hundred fifty-two".