212028293 has 4 divisors (see below), whose sum is σ = 212710368. Its totient is φ = 211346220.

The previous prime is 212028209. The next prime is 212028307. The reversal of 212028293 is 392820212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212028293 - 2¹⁴ = 212011909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272028293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340571 + ... + 341192.

It is an arithmetic number, because the mean of its divisors is an integer number (53177592).

Almost surely, 2^212028293 is an apocalyptic number.

It is an amenable number.

212028293 is a deficient number, since it is larger than the sum of its proper divisors (682075).

212028293 is an equidigital number, since it uses as much as digits as its factorization.

212028293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682074.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 212028293 is about 14561.1913317558. The cubic root of 212028293 is about 596.2997203138.

The spelling of 212028293 in words is "two hundred twelve million, twenty-eight thousand, two hundred ninety-three".