212895228 has 192 divisors, whose sum is σ = 666337280. Its totient is φ = 51321600.

The previous prime is 212895227. The next prime is 212895251. The reversal of 212895228 is 822598212.

212895228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212895227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 643023 + ... + 643353.

Almost surely, 2^212895228 is an apocalyptic number.

212895228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212895228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333168640).

212895228 is an abundant number, since it is smaller than the sum of its proper divisors (453442052).

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

212895228 is a wasteful number, since it uses less digits than its factorization.

212895228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 212895228 is about 14590.9296482438. The cubic root of 212895228 is about 597.1113260345. Note that the first 3 decimals are identical.

The spelling of 212895228 in words is "two hundred twelve million, eight hundred ninety-five thousand, two hundred twenty-eight".