28364212 has 6 divisors (see below), whose sum is σ = 49637378. Its totient is φ = 14182104.

The previous prime is 28364197. The next prime is 28364213. The reversal of 28364212 is 21246382.

It can be written as a sum of positive squares in only one way, i.e., 27920656 + 443556 = 5284^2 + 666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28364213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545523 + ... + 3545530.

Almost surely, 2^28364212 is an apocalyptic number.

It is an amenable number.

28364212 is a deficient number, since it is larger than the sum of its proper divisors (21273166).

28364212 is a wasteful number, since it uses less digits than its factorization.

28364212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091057 (or 7091055 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 28364212 is about 5325.8062300463. The cubic root of 28364212 is about 304.9698510018.

The spelling of 28364212 in words is "twenty-eight million, three hundred sixty-four thousand, two hundred twelve".