212008840 has 64 divisors (see below), whose sum is σ = 509328000. Its totient is φ = 79188480.

The previous prime is 212008807. The next prime is 212008843. The reversal of 212008840 is 48800212.

It is not an unprimeable number, because it can be changed into a prime (212008843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51996 + ... + 55924.

It is an arithmetic number, because the mean of its divisors is an integer number (7958250).

Almost surely, 2^212008840 is an apocalyptic number.

212008840 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 212008840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254664000).

212008840 is an abundant number, since it is smaller than the sum of its proper divisors (297319160).

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

212008840 is a wasteful number, since it uses less digits than its factorization.

212008840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 212008840 is about 14560.5233422429. The cubic root of 212008840 is about 596.2814834816.

The spelling of 212008840 in words is "two hundred twelve million, eight thousand, eight hundred forty".