212145208 has 64 divisors (see below), whose sum is σ = 454053600. Its totient is φ = 92037120.

The previous prime is 212145181. The next prime is 212145217. The reversal of 212145208 is 802541212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247116 + ... + 247972.

Almost surely, 2^212145208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212145208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227026800).

212145208 is an abundant number, since it is smaller than the sum of its proper divisors (241908392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212145208 is a wasteful number, since it uses less digits than its factorization.

212145208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 212145208 is about 14565.2053881845. The cubic root of 212145208 is about 596.4093024999.

The spelling of 212145208 in words is "two hundred twelve million, one hundred forty-five thousand, two hundred eight".