28133222 has 8 divisors (see below), whose sum is σ = 45446016. Its totient is φ = 12984552.

The previous prime is 28133221. The next prime is 28133267. The reversal of 28133222 is 22233182.

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 (28133221) 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, 540998 + ... + 541049.

It is an arithmetic number, because the mean of its divisors is an integer number (5680752).

Almost surely, 2^28133222 is an apocalyptic number.

28133222 is a deficient number, since it is larger than the sum of its proper divisors (17312794).

28133222 is a wasteful number, since it uses less digits than its factorization.

28133222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082062.

The product of its digits is 1152, while the sum is 23.

The square root of 28133222 is about 5304.0759798480. The cubic root of 28133222 is about 304.1397311817.

The spelling of 28133222 in words is "twenty-eight million, one hundred thirty-three thousand, two hundred twenty-two".