212959530 has 240 divisors, whose sum is σ = 693753984. Its totient is φ = 45904320.

The previous prime is 212959529. The next prime is 212959541. The reversal of 212959530 is 35959212.

It is a happy number.

It is a super-2 number, since 2×212959530² = 90703522835641800, which contains 22 as substring.

It is a Curzon 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 119 ways as a sum of consecutive naturals, for example, 2999395 + ... + 2999465.

Almost surely, 2^212959530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212959530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346876992).

212959530 is an abundant number, since it is smaller than the sum of its proper divisors (480794454).

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

212959530 is a wasteful number, since it uses less digits than its factorization.

212959530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 212959530 is about 14593.1329741081. The cubic root of 212959530 is about 597.1714363337.

The spelling of 212959530 in words is "two hundred twelve million, nine hundred fifty-nine thousand, five hundred thirty".