212659980 has 96 divisors (see below), whose sum is σ = 647721984. Its totient is φ = 51819264.

The previous prime is 212659963. The next prime is 212659999. The reversal of 212659980 is 89956212.

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, 79017 + ... + 81663.

It is an arithmetic number, because the mean of its divisors is an integer number (6747104).

Almost surely, 2^212659980 is an apocalyptic number.

212659980 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 212659980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323860992).

212659980 is an abundant number, since it is smaller than the sum of its proper divisors (435062004).

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

212659980 is a wasteful number, since it uses less digits than its factorization.

212659980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775 (or 2773 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 212659980 is about 14582.8659734635. The cubic root of 212659980 is about 596.8913101178.

The spelling of 212659980 in words is "two hundred twelve million, six hundred fifty-nine thousand, nine hundred eighty".