212073686 has 16 divisors (see below), whose sum is σ = 348090048. Its totient is φ = 96102600.

The previous prime is 212073661. The next prime is 212073727. The reversal of 212073686 is 686370212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7280 + ... + 21843.

It is an arithmetic number, because the mean of its divisors is an integer number (21755628).

Almost surely, 2^212073686 is an apocalyptic number.

212073686 is a deficient number, since it is larger than the sum of its proper divisors (136016362).

212073686 is a wasteful number, since it uses less digits than its factorization.

212073686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29467.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 212073686 is about 14562.7499463529. The cubic root of 212073686 is about 596.3422710845.

The spelling of 212073686 in words is "two hundred twelve million, seventy-three thousand, six hundred eighty-six".