212035530 has 128 divisors (see below), whose sum is σ = 618554880. Its totient is φ = 45480960.

The previous prime is 212035529. The next prime is 212035591. The reversal of 212035530 is 35530212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212035497 and 212035506.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 224860 + ... + 225800.

It is an arithmetic number, because the mean of its divisors is an integer number (4832460).

Almost surely, 2^212035530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212035530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309277440).

212035530 is an abundant number, since it is smaller than the sum of its proper divisors (406519350).

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

212035530 is a wasteful number, since it uses less digits than its factorization.

212035530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 212035530 is about 14561.4398326539. The cubic root of 212035530 is about 596.3065045845.

Adding to 212035530 its reverse (35530212), we get a palindrome (247565742).

The spelling of 212035530 in words is "two hundred twelve million, thirty-five thousand, five hundred thirty".