212227028 has 24 divisors (see below), whose sum is σ = 400404480. Its totient is φ = 97843680.

The previous prime is 212227021. The next prime is 212227039. The reversal of 212227028 is 820722212.

212227028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212227028² = 90080622827425568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 212226988 and 212227006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212227021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64913 + ... + 68103.

It is an arithmetic number, because the mean of its divisors is an integer number (16683520).

Almost surely, 2^212227028 is an apocalyptic number.

It is an amenable number.

212227028 is a deficient number, since it is larger than the sum of its proper divisors (188177452).

212227028 is a wasteful number, since it uses less digits than its factorization.

212227028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4485 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 212227028 is about 14568.0138660011. The cubic root of 212227028 is about 596.4859668712.

The spelling of 212227028 in words is "two hundred twelve million, two hundred twenty-seven thousand, twenty-eight".