212415450 has 96 divisors (see below), whose sum is σ = 573671616. Its totient is φ = 51701760.

The previous prime is 212415433. The next prime is 212415521. The reversal of 212415450 is 54514212.

It is a self number, because there is not a number n which added to its sum of digits gives 212415450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188589 + ... + 189711.

It is an arithmetic number, because the mean of its divisors is an integer number (5975746).

Almost surely, 2^212415450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212415450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286835808).

212415450 is an abundant number, since it is smaller than the sum of its proper divisors (361256166).

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

212415450 is a wasteful number, since it uses less digits than its factorization.

212415450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 212415450 is about 14574.4794075123. The cubic root of 212415450 is about 596.6624411479.

Adding to 212415450 its reverse (54514212), we get a palindrome (266929662).

The spelling of 212415450 in words is "two hundred twelve million, four hundred fifteen thousand, four hundred fifty".