28084212 has 96 divisors (see below), whose sum is σ = 79685760. Its totient is φ = 8501760.

The previous prime is 28084207. The next prime is 28084237. The reversal of 28084212 is 21248082.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

28084212 is a modest number, since divided by 4212 gives 2808 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116412 + ... + 116652.

It is an arithmetic number, because the mean of its divisors is an integer number (830060).

Almost surely, 2^28084212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28084212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39842880).

28084212 is an abundant number, since it is smaller than the sum of its proper divisors (51601548).

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

28084212 is a wasteful number, since it uses less digits than its factorization.

28084212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 28084212 is about 5299.4539341332. The cubic root of 28084212 is about 303.9630177773.

The spelling of 28084212 in words is "twenty-eight million, eighty-four thousand, two hundred twelve".