28620212 has 24 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 13916448.

The previous prime is 28620209. The next prime is 28620217. The reversal of 28620212 is 21202682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28620217) 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, 26393 + ... + 27455.

It is an arithmetic number, because the mean of its divisors is an integer number (2145024).

Almost surely, 2^28620212 is an apocalyptic number.

It is an amenable number.

28620212 is a deficient number, since it is larger than the sum of its proper divisors (22860364).

28620212 is a wasteful number, since it uses less digits than its factorization.

28620212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 28620212 is about 5349.7861639509. The cubic root of 28620212 is about 305.8846019936.

Adding to 28620212 its reverse (21202682), we get a palindrome (49822894).

The spelling of 28620212 in words is "twenty-eight million, six hundred twenty thousand, two hundred twelve".