28630212 has 24 divisors (see below), whose sum is σ = 71942976. Its totient is φ = 8809248.

The previous prime is 28630211. The next prime is 28630219. The reversal of 28630212 is 21203682.

It is not an unprimeable number, because it can be changed into a prime (28630211) 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 in 7 ways as a sum of consecutive naturals, for example, 91608 + ... + 91919.

It is an arithmetic number, because the mean of its divisors is an integer number (2997624).

Almost surely, 2^28630212 is an apocalyptic number.

It is an amenable number.

28630212 is an abundant number, since it is smaller than the sum of its proper divisors (43312764).

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

28630212 is a wasteful number, since it uses less digits than its factorization.

28630212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183547 (or 183545 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28630212 is about 5350.7206991208. The cubic root of 28630212 is about 305.9202235540.

Adding to 28630212 its reverse (21203682), we get a palindrome (49833894).

The spelling of 28630212 in words is "twenty-eight million, six hundred thirty thousand, two hundred twelve".