212620860 has 144 divisors (see below), whose sum is σ = 664215552. Its totient is φ = 55036800.

The previous prime is 212620813. The next prime is 212620871. The reversal of 212620860 is 68026212.

212620860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1622995 + ... + 1623125.

It is an arithmetic number, because the mean of its divisors is an integer number (4612608).

Almost surely, 2^212620860 is an apocalyptic number.

212620860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212620860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332107776).

212620860 is an abundant number, since it is smaller than the sum of its proper divisors (451594692).

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

212620860 is a wasteful number, since it uses less digits than its factorization.

212620860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 212620860 is about 14581.5246116447. The cubic root of 212620860 is about 596.8547073682.

The spelling of 212620860 in words is "two hundred twelve million, six hundred twenty thousand, eight hundred sixty".