28234212 has 24 divisors (see below), whose sum is σ = 69755616. Its totient is φ = 8857728.

The previous prime is 28234201. The next prime is 28234223. The reversal of 28234212 is 21243282.

It is an interprime number because it is at equal distance from previous prime (28234201) and next prime (28234223).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68998 + ... + 69405.

It is an arithmetic number, because the mean of its divisors is an integer number (2906484).

Almost surely, 2^28234212 is an apocalyptic number.

It is an amenable number.

28234212 is an abundant number, since it is smaller than the sum of its proper divisors (41521404).

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

28234212 is a wasteful number, since it uses less digits than its factorization.

28234212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138427 (or 138425 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 28234212 is about 5313.5874886935. The cubic root of 28234212 is about 304.5032206755.

Adding to 28234212 its reverse (21243282), we get a palindrome (49477494).

The spelling of 28234212 in words is "twenty-eight million, two hundred thirty-four thousand, two hundred twelve".