212395028 has 12 divisors (see below), whose sum is σ = 372408372. Its totient is φ = 105992640.

The previous prime is 212395003. The next prime is 212395037. The reversal of 212395028 is 820593212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 104816644 + 107578384 = 10238^2 + 10372^2 .

It is a super-2 number, since 2×212395028² = 90223295838241568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212394985 and 212395003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48875 + ... + 53042.

It is an arithmetic number, because the mean of its divisors is an integer number (31034031).

Almost surely, 2^212395028 is an apocalyptic number.

It is an amenable number.

212395028 is a deficient number, since it is larger than the sum of its proper divisors (160013344).

212395028 is a wasteful number, since it uses less digits than its factorization.

212395028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102442 (or 102440 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 212395028 is about 14573.7787824572. The cubic root of 212395028 is about 596.6433191382.

The spelling of 212395028 in words is "two hundred twelve million, three hundred ninety-five thousand, twenty-eight".