212090870 has 16 divisors (see below), whose sum is σ = 383576688. Its totient is φ = 84433440.

The previous prime is 212090849. The next prime is 212090917. The reversal of 212090870 is 78090212.

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, 48149 + ... + 52368.

It is an arithmetic number, because the mean of its divisors is an integer number (23973543).

Almost surely, 2^212090870 is an apocalyptic number.

212090870 is a deficient number, since it is larger than the sum of its proper divisors (171485818).

212090870 is a wasteful number, since it uses less digits than its factorization.

212090870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100735.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 212090870 is about 14563.3399328588. The cubic root of 212090870 is about 596.3583775441.

The spelling of 212090870 in words is "two hundred twelve million, ninety thousand, eight hundred seventy".