28462228 has 24 divisors (see below), whose sum is σ = 52606400. Its totient is φ = 13436928.

The previous prime is 28462223. The next prime is 28462229. The reversal of 28462228 is 82226482.

It is a junction number, because it is equal to n+sod(n) for n = 28462193 and 28462202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28462223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36628 + ... + 37396.

Almost surely, 2^28462228 is an apocalyptic number.

It is an amenable number.

28462228 is a deficient number, since it is larger than the sum of its proper divisors (24144172).

28462228 is a wasteful number, since it uses less digits than its factorization.

28462228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1277 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 28462228 is about 5335.0002811621. Note that the first 3 decimals coincide. The cubic root of 28462228 is about 305.3207339987.

The spelling of 28462228 in words is "twenty-eight million, four hundred sixty-two thousand, two hundred twenty-eight".