212682840 has 128 divisors (see below), whose sum is σ = 670602240. Its totient is φ = 53858816.

The previous prime is 212682809. The next prime is 212682851. The reversal of 212682840 is 48286212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725734 + ... + 726026.

It is an arithmetic number, because the mean of its divisors is an integer number (5239080).

Almost surely, 2^212682840 is an apocalyptic number.

212682840 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 212682840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335301120).

212682840 is an abundant number, since it is smaller than the sum of its proper divisors (457919400).

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

212682840 is a wasteful number, since it uses less digits than its factorization.

212682840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 212682840 is about 14583.6497489483. The cubic root of 212682840 is about 596.9126970700.

The spelling of 212682840 in words is "two hundred twelve million, six hundred eighty-two thousand, eight hundred forty".