212486810 has 16 divisors (see below), whose sum is σ = 384150600. Its totient is φ = 84622656.

The previous prime is 212486797. The next prime is 212486821. The reversal of 212486810 is 18684212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170015521 + 42471289 = 13039^2 + 6517^2 .

It is a super-2 number, since 2×212486810² = 90301288847952200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44105 + ... + 48684.

Almost surely, 2^212486810 is an apocalyptic number.

212486810 is a deficient number, since it is larger than the sum of its proper divisors (171663790).

212486810 is a wasteful number, since it uses less digits than its factorization.

212486810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93025.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 212486810 is about 14576.9273168250. The cubic root of 212486810 is about 596.7292490076.

The spelling of 212486810 in words is "two hundred twelve million, four hundred eighty-six thousand, eight hundred ten".