28212183 has 12 divisors (see below), whose sum is σ = 40923168. Its totient is φ = 18728640.

The previous prime is 28212179. The next prime is 28212187. The reversal of 28212183 is 38121282.

It is an interprime number because it is at equal distance from previous prime (28212179) and next prime (28212187).

It is not a de Polignac number, because 28212183 - 2² = 28212179 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28212187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4335 + ... + 8672.

It is an arithmetic number, because the mean of its divisors is an integer number (3410264).

Almost surely, 2^28212183 is an apocalyptic number.

28212183 is a deficient number, since it is larger than the sum of its proper divisors (12710985).

28212183 is a wasteful number, since it uses less digits than its factorization.

28212183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13254 (or 13251 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 28212183 is about 5311.5141908876. The cubic root of 28212183 is about 304.4240065321.

Subtracting 28212183 from its reverse (38121282), we obtain a palindrome (9909099).

The spelling of 28212183 in words is "twenty-eight million, two hundred twelve thousand, one hundred eighty-three".