212323228 has 48 divisors (see below), whose sum is σ = 409812480. Its totient is φ = 95659200.

The previous prime is 212323219. The next prime is 212323229. The reversal of 212323228 is 822323212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483433 + ... + 483871.

It is an arithmetic number, because the mean of its divisors is an integer number (8537760).

Almost surely, 2^212323228 is an apocalyptic number.

It is an amenable number.

212323228 is a deficient number, since it is larger than the sum of its proper divisors (197489252).

212323228 is a wasteful number, since it uses less digits than its factorization.

212323228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 656 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 212323228 is about 14571.3152460579. The cubic root of 212323228 is about 596.5760799332.

The spelling of 212323228 in words is "two hundred twelve million, three hundred twenty-three thousand, two hundred twenty-eight".