28212606 has 24 divisors (see below), whose sum is σ = 64345320. Its totient is φ = 8909136.

The previous prime is 28212557. The next prime is 28212617. The reversal of 28212606 is 60621282.

It is a super-2 number, since 2×28212606² = 1591902274622472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28212606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40905 + ... + 41588.

It is an arithmetic number, because the mean of its divisors is an integer number (2681055).

Almost surely, 2^28212606 is an apocalyptic number.

28212606 is an abundant number, since it is smaller than the sum of its proper divisors (36132714).

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

28212606 is a wasteful number, since it uses less digits than its factorization.

28212606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82520 (or 82517 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 28212606 is about 5311.5540098920. The cubic root of 28212606 is about 304.4255279872.

Adding to 28212606 its reverse (60621282), we get a palindrome (88833888).

The spelling of 28212606 in words is "twenty-eight million, two hundred twelve thousand, six hundred six".