212823928 has 16 divisors (see below), whose sum is σ = 411917760. Its totient is φ = 102979200.

The previous prime is 212823911. The next prime is 212823977. The reversal of 212823928 is 829328212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428833 + ... + 429328.

It is an arithmetic number, because the mean of its divisors is an integer number (25744860).

Almost surely, 2^212823928 is an apocalyptic number.

It is an amenable number.

212823928 is a deficient number, since it is larger than the sum of its proper divisors (199093832).

212823928 is a wasteful number, since it uses less digits than its factorization.

212823928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858198 (or 858194 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 212823928 is about 14588.4861449021. The cubic root of 212823928 is about 597.0446597661.

The spelling of 212823928 in words is "two hundred twelve million, eight hundred twenty-three thousand, nine hundred twenty-eight".