28467228 has 24 divisors (see below), whose sum is σ = 67416832. Its totient is φ = 9347184.

The previous prime is 28467221. The next prime is 28467239. The reversal of 28467228 is 82276482.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28467221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16900 + ... + 18507.

Almost surely, 2^28467228 is an apocalyptic number.

It is an amenable number.

28467228 is an abundant number, since it is smaller than the sum of its proper divisors (38949604).

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

28467228 is a wasteful number, since it uses less digits than its factorization.

28467228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35481 (or 35479 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 28467228 is about 5335.4688641206. The cubic root of 28467228 is about 305.3386116608.

The spelling of 28467228 in words is "twenty-eight million, four hundred sixty-seven thousand, two hundred twenty-eight".