212547850 has 12 divisors (see below), whose sum is σ = 395339094. Its totient is φ = 85019120.

The previous prime is 212547823. The next prime is 212547859. The reversal of 212547850 is 58745212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 201611601 + 10936249 = 14199^2 + 3307^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (212547859) 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 5 ways as a sum of consecutive naturals, for example, 2125429 + ... + 2125528.

Almost surely, 2^212547850 is an apocalyptic number.

212547850 is a deficient number, since it is larger than the sum of its proper divisors (182791244).

212547850 is a wasteful number, since it uses less digits than its factorization.

212547850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250969 (or 4250964 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 212547850 is about 14579.0208861912. The cubic root of 212547850 is about 596.7863833243.

The spelling of 212547850 in words is "two hundred twelve million, five hundred forty-seven thousand, eight hundred fifty".