212015430 has 96 divisors (see below), whose sum is σ = 604101888. Its totient is φ = 51163200.

The previous prime is 212015411. The next prime is 212015431. The reversal of 212015430 is 34510212.

212015430 is a `hidden beast` number, since 2 + 120 + 1 + 543 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212015431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327367 + ... + 328013.

It is an arithmetic number, because the mean of its divisors is an integer number (6292728).

Almost surely, 2^212015430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212015430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302050944).

212015430 is an abundant number, since it is smaller than the sum of its proper divisors (392086458).

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

212015430 is a wasteful number, since it uses less digits than its factorization.

212015430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 212015430 is about 14560.7496372955. The cubic root of 212015430 is about 596.2876616112.

Adding to 212015430 its reverse (34510212), we get a palindrome (246525642).

The spelling of 212015430 in words is "two hundred twelve million, fifteen thousand, four hundred thirty".