212394356 has 12 divisors (see below), whose sum is σ = 381736068. Its totient is φ = 103326912.

The previous prime is 212394341. The next prime is 212394359. The reversal of 212394356 is 653493212.

It can be written as a sum of positive squares in 2 ways, for example, as 110586256 + 101808100 = 10516^2 + 10090^2 .

It is a super-2 number, since 2×212394356² = 90222724921309472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212394359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717401 + ... + 717696.

It is an arithmetic number, because the mean of its divisors is an integer number (31811339).

Almost surely, 2^212394356 is an apocalyptic number.

It is an amenable number.

212394356 is a deficient number, since it is larger than the sum of its proper divisors (169341712).

212394356 is a wasteful number, since it uses less digits than its factorization.

212394356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435138 (or 1435136 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 212394356 is about 14573.7557273340. The cubic root of 212394356 is about 596.6426898944.

The spelling of 212394356 in words is "two hundred twelve million, three hundred ninety-four thousand, three hundred fifty-six".